Which of the following tools or services provides this information?

Explanations:

Amazon CloudWatch tracks metrics, logs, and alarms related to the health and performance of resources, but it does not provide detailed request-level information such as the originating IP or the specific EC2 instance that processed a request.

AWS CloudTrail provides detailed logs for API calls made within the AWS environment, including user activity and service requests, but it does not track individual application requests or IP addresses for traffic passing through an ALB.

Elastic Load Balancing access logs provide detailed information about the requests that ALB handles, including the originating IP address, the requested URL, and the EC2 instance that processed the request.

VPC Flow Logs capture network traffic metadata at the network interface level but do not provide the granularity required to track application-level requests or identify which EC2 instance processed a specific request.