I would say understatement.
Example: You fall down the stairs and break your leg.While the ambulance is on the way, your friends asks how much it hurts and instead of wanting to seem like a crybaby you downplay how much pain you're actually in. Which is an understatement.
D. My sweet, quiet father surprised us with his outburst yesterday.
hope it helps
Answer:
the third one Dishonorable it has dis and able
Explanation: