Amazon EC2 provides virtual computing environments, known as :

chunks
instances
messages
none of the mentioned

The correct answer is: B. instances

Amazon EC2 provides resizable compute capacity in the cloud. It is a web service that provides resizable compute capacity in the cloud. It is designed to make web-scale computing easier for developers and businesses. Amazon EC2 provides a variety of instance types that are optimized for different workloads, such as web applications, databases, and big data analytics.

  • Chunks are not a term used in Amazon EC2.
  • Messages are not a term used in Amazon EC2.
  • None of the mentioned is not the correct answer.

I hope this helps! Let me know if you have any other questions.