Computer Science

The default font size in Microsoft PowerPoint for body text in text placeholders is typically 18 points. This is the standard size used in new presentations unless changed by the user or template. The options 10, 11, and 12 are common font sizes but not the default in PowerPoint. Therefore, the correct answer is D (18).

VGA stands for Video Graphics Array, which is a standard for display hardware introduced by IBM. It is widely recognized as the correct expansion of the acronym VGA.

VOIP stands for Voice over IP, which refers to the technology that allows voice communication over Internet Protocol networks.

VAB commonly stands for 'Voice Answer Back,' which is a telecommunication feature allowing a system to respond with a voice message automatically. This matches option C, making it the correct answer.

A motion path in Microsoft PowerPoint is an animation effect that moves an object along a specified path on a slide. It is not an entrance effect nor a method of advancing slides, so option C is correct.

VLSI stands for Very Large Scale Integration, which refers to the process of creating integrated circuits by combining thousands of transistors into a single chip. This is a fundamental concept in electronics and computer engineering.

In Microsoft Word, the shortcut key to mark a citation is Alt + Shift + I. This opens the Mark Citation dialog box, allowing users to add a citation to the document.

Applications that combine text, sound, graphics, motion video, and/or animation are called multimedia applications because they integrate multiple forms of media.

The shortcut key Ctrl + E is used to center align the selected text in most text editing software, such as Microsoft Word. Ctrl + C is for copy, Ctrl + A is for select all, and 'None of these' is incorrect.

In Microsoft Word, inserting wallpaper (commonly referred to as a background or watermark) is used to add visual interest or branding to a document, such as a logo or decorative image behind the text. It does not affect margins, fonts, or headers/footers.