Which service allows you to evaluate configuration settings of AWS resources?

The correct answer is AWS Config rules, as they are specifically designed to evaluate the compliance of AWS resource configurations against defined policies or rules. AWS Config monitors configurations of AWS resources and enables users to assess whether those configurations comply with best practices or organizational policies. By defining rules, you can automatically check the state of your resources and detect if they meet desired configurations.

AWS Config rules provide a framework for compliance management, allowing for both predefined rules (such as those provided by AWS) and custom rules that can be tailored to specific business needs. This service is crucial for maintaining security and governance in the cloud by ensuring that resources are configured correctly and remain compliant over time.

The other options do not serve the same purpose. AWS Trusted Advisor offers recommendations based on best practices, focusing on cost optimization, performance, security, fault tolerance, and service limits. AWS Config Analyzer is more about providing insights and relationships of resource configurations rather than evaluating them against specific rules. AWS Config Snapshot refers to a point-in-time record of configurations and does not actively evaluate compliance like AWS Config rules do.