The best countermeasure to encrypt ransomware is to _________.

This is because ransomware encrypts your data and then demands a ransom payment in order to decrypt it. If you have a backup of your data, you can restore it from the backup and avoid paying the ransom.
The backup should be kept offline, meaning that it should not be connected to the internet. This is because ransomware can often spread through the internet. If your backup is connected to the internet, it could be infected with ransomware and your data could be lost.
The backup should also be stored in a secure location. This means that it should be kept in a place where it is not likely to be lost or damaged.