When something is needed to bring about something else, but is not good enough to bring it about by itself, it is considered
A) sufficient
B) absolute
C) irrelevant
D) necessary

Question

Quizplus · Accepted Answer

The word "needed" implies that this is a situation where something must happen in order for something else to happen. If it is "not good enough to bring it about by itself," then it means that there is something else that is required in addition to it. This means that the thing in question is necessary, but not sufficient on its own.

When Something Is Needed to Bring About Something Else, but Is