How can user achieve this?

Explanations:

Creating an AMI from an encrypted volume does not allow sharing the AMI with another AWS account if the AMI is encrypted, unless the other account has access to the same encryption keys. AMIs are not directly shareable across accounts without the proper permissions on the encryption key.

Copying data to an unencrypted volume would require manually transferring the data, which is not an efficient method for sharing an EBS volume. Additionally, it compromises the security of the data during the transfer and storage process.

Taking a snapshot of the encrypted EBS volume and sharing it is a valid method for sharing the data. The user can share the snapshot with the friend’s AWS account, provided that the friend has access to the same encryption key used to encrypt the volume. This method preserves data security and allows for sharing across accounts.

While sharing an encrypted EBS volume directly is possible if both accounts use the same encryption key, the option does not clearly indicate the need to create a snapshot for proper sharing. Direct sharing of volumes is not a common practice, and this answer does not adequately address the requirement of sharing with another account in AWS.