Which AWS service should a cloud practitioner use to identify security vulnerabilities of an AWS account?

Explanations:

AWS Secrets Manager is used for managing secrets such as API keys, passwords, and database credentials, not for identifying security vulnerabilities in an AWS account.

Amazon Cognito is primarily a service for managing user authentication and access control for mobile and web applications. It does not assess security vulnerabilities of an AWS account.

Amazon Macie is designed for data security and privacy, specifically for identifying and protecting sensitive data stored in AWS, but it does not directly assess overall account security vulnerabilities.

AWS Trusted Advisor provides real-time guidance to help you provision your resources following AWS best practices, including security checks that can identify vulnerabilities and recommend improvements in your AWS account security.