Correct Answer - B.
AWS Personal Health Dashboard provides detailed information about performance & availability of AWS services which may impact customers' resources.
AWS Personal Health Dashboard works along with Amazon CloudWatch and provides notifications when there are issues with Amazon CloudWatch service.
Option A is incorrect as Amazon CloudWatch Events cannot be used to identify issues with the Amazon CloudWatch service.
Option C is incorrect as AWS Trusted Advisor does not send notifications when there are issues in the Amazon CloudWatch service.
Option D is incorrect as Amazon CloudTrail logs do not notify issues with the Amazon CloudWatch service.
