You are creating a DLP policy named Policy1 that will be applied to the locations...

You are creating a Data Loss Prevention (DLP) policy in Microsoft 365 with advanced rules. Advanced DLP rules provide more granular conditions and actions than standard DLP rules.

Conditions available in advanced DLP

According to Microsoft Docs on Conditions in DLP policies:

✅ Content contains → Used to detect sensitive information types, keywords, or exact data matches. This is one of the most common and fundamental DLP conditions.

✅ Content is shared from Microsoft 365 → Used to detect whether content has been shared externally or with specific domains/users. This is a modern advanced DLP condition.

Why the others are not correct:

A. Document property is → This condition applies to information governance retention policies/labels (not DLP). Not available in DLP rules.

B. Attachment's file extension is → This is supported in Exchange mail flow rules (transport rules) but not in advanced DLP rules.

C. Document size equals or is greater than → Also applies in Exchange transport rules and certain SharePoint restrictions, but not available as a DLP rule condition.