Explanation

Multifactor authentication combines two or more independent credentials: what the user knows, such as a password; what the user has, such as a security token; and what the user is, by using biometric verification methods.

Explanation
Text Description automatically generated

Explanation:

Box 1: Yes
You can use sensitivity labels to provide protection settings that include encryption of emails and documents to prevent unauthorized people from accessing this data.
Box 2: Yes
You can use sensitivity labels to mark the content when you use Office apps, by adding watermarks, headers, or footers to documents that have the label applied.
Box 3: NO
https://docs.microsoft.com/en-us/information-protection/deploy-use/configure-policy-markings

Reference:
https://docs.microsoft.com/en-us/azure/sentinel/overview

Reference:
https://docs.microsoft.com/en-us/azure/active-directory/external-identities/what-is-b2b