You have a Microsoft 365 Enterprise E5 subscription.

You use Windows Defender Advanced Threat Protection (Windows Defender ATP). You plan to use Microsoft Office 365 Attack simulator.

What is a prerequisite for running Attack simulator?

A. Enable multi-factor authentication (MFA)

B. Configure Advanced Threat Protection (ATP)
C. Create a Conditional Access App Control policy for accessing Office 365
D. Integrate Office 365 Threat Intelligence and Windows Defender ATP

Reference:
https://docs.microsoft.com/en-us/office365/securitycompliance/attack-simulator