Which of the below mentioned services can be used to monitor changes to your infrastructure.

Answer options:

A.AWS Cloudtrail
B.AWS Cloudwatch
C.AWS Cloudwatch logs
D.AWS Config

Answer - D
The AWS documentation mentions the following
AWS Config provides a detailed view of the configuration of AWS resources in your AWS account. This includes how the resources are related to one another and how they were configured in the past so that you can see how the configurations and relationships change over time.
For more information on AWS Config, please refer to the below URL:
http://docs.aws.amazon.com/config/latest/developerguide/WhatIsConfig.html