The answer here would be answer choice C. When reading this statement out loud, one can tell that there is a "gap" at the beginning between "he" and "is". It starts up an entirely new statement without any punctuation, so we can tell that this is the only place that our semicolon deserves to go.
Answer:
Beacause they worked hard and the friend that worked the hardest has succeeded because of his hard work
Explanation:
