Which AWS service will meet these requirements?

Explanations:

Amazon Inspector is a vulnerability management service designed to identify potential security risks in applications and EC2 instances but does not analyze log data for security investigations.

Amazon QuickSight is a business intelligence service for creating visualizations and performing data analytics, but it is not designed for security investigations or log analysis.

Amazon Detective uses machine learning to analyze and visualize log data, including VPC flow logs and AWS CloudTrail logs, to aid in security investigations.

Amazon GuardDuty is a threat detection service that identifies potential threats by monitoring logs but does not provide investigative capabilities like Amazon Detective.