Aman-made world event that would affect the labor market would be a(n) a. tornado b. hurricane c. war d. earthquake

A man made event is C. war

All of these would affect the labor market, as they could all cause displacement, injury, or death. However, to answer the question, we must examine it more closely. It specifically asks which man made event would affect the labor market. Tornados, hurricanes, and earthquakes are all natural disasters. None of those could be man made.
This leaves us with the correct answer, (c) war.