What is the extension of PowerPoint in Microsoft Office 2007?

Correct option is B

The .pptx extension is used for Microsoft PowerPoint 2007 and later versions. The "x" in .pptx indicates that the file is using the Open XML format, which was introduced with Microsoft Office 2007 to improve compatibility and data management.
Important Key Points:
1. .pptx Format - Introduced in Microsoft Office 2007, .pptx replaced the older .ppt format. It provides enhanced features like better file compression and support for advanced graphics.
2. Compatibility - Files with the .pptx extension are compatible with later versions of PowerPoint, as well as other software that supports Open XML formats.
Knowledge Booster:
• .ptx: This is not a valid extension for PowerPoint files. It may be confused with other file types.
• .ptp: This is not a recognized extension for PowerPoint files and is included here as a distractor.