Which services or features can the administrator use to investigate where the requests are coming from?

Explanations:

AWS CloudTrail data events can log API calls made to S3, including LIST requests. This allows the administrator to see who made the requests and from which source, aiding in identifying the origin of the traffic.

Amazon EventBridge is primarily used for event-driven applications and automation. While it can help in routing events from various AWS services, it does not directly provide insights into the origin of S3 LIST requests.

The AWS Health Dashboard provides information about the status of AWS services and your account’s health but does not provide specific logging or request data related to S3 bucket operations.

Amazon S3 server access logging provides detailed records of requests made to an S3 bucket. This includes information on the requester, request type, and resource, allowing for thorough investigation of LIST request origins.

AWS Trusted Advisor offers best practices and recommendations for AWS accounts but does not provide detailed logging or analysis of S3 requests, making it unsuitable for investigating the source of LIST requests.