Answer: A
Option A is CORRECT because to track requests for access to your bucket, you can enable access logging. Each access log record provides details about a single access request, such as the requester, bucket name, request time, request action, response status, and error code, if any.
Options B is incorrect because Cloudwatch is used for metrics and logging and cannot be used to track S3 bucket access requests.
Options C is incorrect because Cloudwatch is used for metrics and logging and cannot be used to track S3 bucket access requests.
Option D is incorrect because AWS Config is used for Configuration management but for not tracking S3 bucket requests and access requests.
For more information on S3 server logs, please refer to the below URL:
https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerLogs.html