Correct answer - "EBS" : Amazon Elastic Block Store (Amazon EBS) provides persistent block
storage volumes for use with Amazon EC2 instances in the AWS Cloud. Each Amazon EBS volume is
automatically replicated within its Availability Zone to protect you from component failure,
offering high availability and durability.
Incorrect:
"S3" - S3 is an object storage that does not attach to EC2 instances but can be used by EC2
instances to get and put objects
"FTP" - File Transfer Protocol (FTP) is a standard network protocol used for the transfer of
computer files between a client and server on a computer network
"RDS" - RDS is an AWS managed service which means you do not have access to an EC2 instance to
detach and mount data