Answer – A and D
The AWS Documentation mentions the following.
AWS OpsWorks is a configuration management service that helps you configure and operate applications in a cloud enterprise using Puppet or Chef. AWS OpsWorks Stacks and AWS OpsWorks for Chef Automate let you use Chef cookbooks and solutions for configuration management. In contrast, OpsWorks for Puppet Enterprise lets you configure a Puppet Enterprise master server in AWS. Puppet offers a set of tools for enforcing the desired state of your infrastructure and automating on-demand tasks.
Options B and C are incorrect because Ansible and SaltStack are automation tools and cannot be used with AWS OpsWorks.
For more information on Opsworks, please refer to the below URL-
https://docs.aws.amazon.com/opsworks/latest/userguide/welcome.html