A company needs to view a list of security groups that are open to the...

To view a list of security groups that are open to the internet on port 3389, the most appropriate tool is AWS Trusted Advisor.

AWS Trusted Advisor:

AWS Trusted Advisor provides real-time guidance to help you provision your resources following AWS best practices.

It includes a security check that identifies security groups with unrestricted access.

Using Trusted Advisor:

Go to the AWS Trusted Advisor console.

In the "Security" category, look for the check that identifies security groups with unrestricted access.

Review the report to find security groups that allow unrestricted access on port 3389 (RDP).

AWS Trusted Advisor

AWS Trusted Advisor Best Practices