Automated investigation and remediation is the correct option.

This capability in Microsoft 365 Defender automatically investigates alerts by collecting related signals and applying built in investigation logic to determine the scope and cause of an incident. It can then apply automated remediation actions to contain threats and reduce the manual effort required by the security operations team.

Microsoft Intelligent Security Graph is incorrect because it is a set of threat intelligence and APIs that surface signals across Microsoft services rather than the specific automation feature that runs investigations and remediations.

Microsoft Defender for Endpoint is incorrect because it is a product that provides endpoint protection and telemetry. The question asks for the capability that automates investigation and remediation across alerts and products which is the automated investigation and remediation feature within Microsoft 365 Defender.

Security Action Center is incorrect because that name does not refer to the automated investigation and remediation capability. It sounds like a console or summary view and it is not the feature that performs automated investigations and remediation.

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