Concept:Antonyms are words with opposite meanings. "Go on" means to continue an action or proceed forward. Its antonym must indicate cessation or halting.
Explanation:First, understand "Go on": For example, "Please go on with your story" means continue. Now check each option:
A. Proceed: Means to go forward, similar to go on. Not an antonym.
B. Continue: Means to keep doing something, same meaning. Not opposite.
C. Persist: Means to continue despite obstacles, also similar.
D. Stop: Means to end or cease an action. This is the direct opposite of go on. For example, "Stop talking" is the opposite of "Go on talking".
Thus, only "Stop" fits as the antonym.
Answer:D. Stop