_____ you decide to do, you should try to make it a success . A. If only B. Unless C. Wherever D. Wh

_____ you decide to do, you should try to make it a success . A. If only B. Unless C. Wherever D. Whatever

The correct answer is D. Whatever.

The sentence would read: "Whatever you decide to do, you should try to make it a success."

This fits the context of expressing that no matter what decision is made, success should be the goal.