Making sure that the data is accessible when and where it is needed is which of the following?

A.
Confidentiality

B.
Integrity

C.
Acceptability

D.
Availability

Explanation:
This is one of the pillars of network security. We can say that the data is available if we can access to
it when we need it. This what is referred in the question, Availability refers to get access to data
when and where you need it. Confidentiality deals with encryption and data protection against third
party interception. Integrity deals with digital signatures and assures that the data has not changed.
Acceptability is not a related term.