To ensure that critical systems is not lost during a failure, it is important that which of the following be true? a. mttf < mttr. b. mttr < rto. c. rpo < mttf. d. rto = rpo.

Option (D) i.e., RTO = RPO is the correct option.

Explanation:

In the following statement, when they make sure that the system which is critical is not lost at that time of the error. That's why it is necessary that Recovery Time Objective i.e., RTO is equal to the Recovery Point Objective i.e., RPO. So, that's why the option d is correct.

Other options are not true because they are not related to the following statement.

answer; availability;