Answer:(a) Water mark

Answer:(a) Joint Photographic Experts Group

Answer:(d) All of these

The four grouping options are Group, Ungroup, Enter Group and Exit Group.

Answer:(c) Odt

.odt is a LibreOffice Writer document extension, not an image format.

Answer:(c) copying

The Image toolbar offers Filter, Mode, Crop, Flip, Rotate, Transparency and Colour tools — but no copying tool.

Answer:(a) Mosaic

Clicking Image Filter opens a window of filters for improving an image, including Invert, Smooth, Sharpen, Remove Noise, Solarisation, Aging, Posterise, Charcoal Sketch, Relief and Mosaic. Mosaic joins a group of pixels into a single area of one colour (a further dialogue box lets you adjust the parameter), while Posterise reduces colours to make the picture look like a painting and Relief adjusts the light source to create a shadow effect.

A digital image is a picture (drawing, chart, photo, logo, graph, or video frame) represented as a finite set of digital values — 0s and 1s — known as pixels, stored in graphics file formats like GIF, JPG, JPEG, PNG, BMP, etc.

It can be created/inserted in a document using the Insert Image dialog box, by Drag and Drop, by Copy-Paste, or by Linking the image file.

1. Open the document in LibreOffice Writer where the image is to be inserted.
2. Open the Gallery (View > Toolbars > Gallery) and locate the desired image.
3. Click and drag the image from the Gallery to the desired position in the document.
4. Drop it at the required location — the image gets inserted/embedded in the document.

Resizing changes the overall size (height/width) of the image while retaining the full picture content — done by dragging the sizing handles; corner handles resize both dimensions proportionally, while edge handles resize only one dimension.

Cropping cuts off/removes an unwanted part of the image — the content itself is trimmed rather than scaled.

The Drawing Toolbar contains tools like Select, Insert Line, Rectangle, Ellipse/Oval, Curve, Connector, Basic Shapes, Symbol Shapes, Arrow Shapes, Flowchart Shapes, Callouts, Star Shapes, Text Box, Fontwork, Points, and Toggle Extrusion. Any five, described:

• Rectangle — draws a rectangular shape by clicking and dragging.
• Circle/Oval — draws a circular or oval shape.
• Curve — draws freeform curved lines/shapes.
• Callout (list) — draws speech/text callout boxes pointing to an object.
• Text Box — inserts a box in which text can be typed and formatted independently of the main document text.

Embedding saves an actual copy of the image file inside the document, increasing its file size — inserting via Insert Image, Drag-Drop, or Copy-Paste all embed the image.

Linking stores only a reference/path to the image file — the actual image stays as a separate file and is merged into view only when the document is opened, keeping the document size small.

Preferred situation: Linking is preferable when the same image needs to be inserted multiple times in a document or across documents, since only one copy of the image needs to be maintained/updated.

1. Select the drawing object whose properties are to be modified (or select the drawing tool before drawing, to set default values).
2. On the Drawing Object Properties Toolbar, click on the icon of the property to be modified (e.g. Fill Colour, Line Colour, Line Width).
3. Change the value of the parameter as required.
4. Repeat steps 2–3 for each property to be changed.

Benefits: Grouped shapes behave as a single entity, so they can be moved, resized, or have properties changed together without disturbing their relative size and position — making complex multi-shape drawings (like a flowchart or family tree) much easier to edit.

Drawbacks: Individual shapes cannot be edited separately unless the group is entered (Enter Group) or ungrouped first, adding an extra step when only one shape needs modification.

• Fill Colour — changes/applies the background/fill colour of a selected drawing object (e.g. changing a rectangle's fill to lime yellow).
• Line Colour — changes the colour of the border/outline of a drawing object or a drawn line, and can be combined with Line Width to set border thickness.

1. Open the document in LibreOffice Writer and enable the Drawing Toolbar (View > Toolbars > Drawing).
2. Select the desired shape from the Basic Shapes list on the Drawing Toolbar.
3. Click and drag in the document to draw the basic shape.
4. Right-click the shape and set its Area fill type as Image (or use Format > Area), choosing the desired image file.
5. The selected image now appears filled inside the basic shape.

Image Filter is a tool on the Image Toolbar which, on clicking, opens a window of filters used for improving/modifying the appearance of an image. Any five filters, described:

• Invert — inverts the colour values of a coloured image; if the image is grey-scale, its brightness is inverted instead.
• Smooth — softens the contrast of the image (a dialogue box appears to adjust the parameter).
• Sharpen — increases the contrast of the image.
• Remove Noise — removes single stray pixels from the image.
• Solarisation — reverses the tone of a photograph so dark areas appear light and light areas appear dark (parameter adjustable via a dialogue box).
• Aging — simulates the effect of time on a picture (parameter adjustable via a dialogue box).
• Posterise — makes a picture look like a painting by reducing the number of colours in the image.
• Charcoal Sketch — changes the image to look like a charcoal sketch.
• Relief — adjusts the light source to create a shadow effect.
• Mosaic — joins a group of pixels into a single area of one colour.