Understanding Microsoft Excel's Protected View Feature

Which of the following types of workbooks open in Protected View?

a. workbooks from the web

b. workbooks with macros

c. workbooks with ActiveX controls

d. all of the above

All of the above types of workbooks - workbooks from the web, workbooks with macros, and workbooks with ActiveX controls - can open in Protected View. Protected View is a security feature in Microsoft Excel that opens a workbook in a restricted mode to help prevent any potentially harmful content from running automatically. When a workbook is opened in Protected View, the user cannot make any changes to the file until they enable editing. They are considered higher risk for containing malicious content or harmful macros. Workbooks from the web can be from an untrusted source, while workbooks with macros and ActiveX controls can execute code that may not be safe for the user's computer. Therefore, opening these types of workbooks in Protected View helps to protect the user and their device. In Microsoft Excel, Protected View is designed to protect your computer from potentially harmful files. When you open a workbook in Protected View, it includes the following types of workbooks: - Workbooks from the web: Files downloaded from the internet are opened in Protected View to prevent any malicious content from harming your system. - Workbooks with macros: Macros can contain harmful code, so workbooks with macros will open in Protected View to ensure safety. - Workbooks with ActiveX controls: Similar to macros, ActiveX controls can pose security risks, and thus workbooks with ActiveX controls open in Protected View. In summary, all of the above types of workbooks (a, b, and c) will open in Protected View to maintain security and protect your system from potential threats.