In SC-300, the mitigation for unsolicited MFA prompts (push fatigue) is Fraud alert on Azure AD MFA. The materials state that administrators can "allow users to report suspicious MFA prompts and automatically block the user when they select Report fraud in Mi crosoft Authenticator." By contrast, Account lockout settings are designed to "temporarily lock an account after a configurable number of consecutive MFA denials to thwart brute-force attempts," and they do not initiate an automatic block tied to a user's fraud report. The study guide further clarifies that fraud alerts "can automatically block the user for a specified period (default 90 days) when a fraudulent attempt is reported," which is precisely the behavior required in the scenario. Therefore, merely configuring Account lockout settings will not meet the goal of automatically blocking users when they report an unsolicited prompt.