Which of the following is not a feature of AWS Security Token Service?

Answer options:

A.STS enables you to request temporary, limited-privilege credentials.
B.STS enables users to assume role.
C.STS generates Git Credentials for IAM users.
D.By default, AWS STS is available as a global service.

Answer: C
Options A, B, D are incorrect.
Option A is a true statement.
Option B is a true statement.
STS “AssumeRole” action will enable users to assume a role.https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html
Option C is a false statement, so correct option.
With Git credentials, you can generate a static user name and password in the Identity and Access Management (IAM) console that you can use to access AWS CodeCommit repositories from the command line, Git CLI, or any Git tool that supports HTTPS authentication.
https://aws.amazon.com/blogs/devops/introducing-git-credentials-a-simple-way-to-connect-to-aws-codecommit-repositories-using-a-static-user-name-and-password/
Option D is a true statement because by default, AWS Security Token Service (AWS STS) is available as a global service, and all AWS STS requests go to a single endpoint at 
https://sts.amazonaws.com
. Global requests map to the US East (N. Virginia) Region. AWS recommends using Regional AWS STS endpoints instead of the global endpoint to reduce latency, build in redundancy, and increase session token validity.
https://docs.aws.amazon.com/STS/latest/APIReference/welcome.html