Which of the following components of the Cloudfront service can be used to distribute content to users across the globe?

Answer options:

A.Amazon VPC
B.Amazon Regions
C.Amazon Availability Zones
D.Amazon Edge locations

Answer - D
The AWS documentation mentions the following:
Amazon CloudFront is a web service that speeds up distribution of your static and dynamic web content, such as .html, .css, .js, and image files, to your users. CloudFront delivers your content through a worldwide network of data centers called edge locations.
For more information on Amazon Cloudfront, please refer to the below URL:
http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/Introduction.html