The antonym is D. Reckless because cautious is to be very careful about your thoughts and actions. Reckless is completely insane. Your Welcome:)
D. An artificial device used to replace a missing body part
I hope that helps. Good luck
<span>a comparison of two sets of events, ideas, and things</span>
.Answer: alliteration: Sheep should sleep in a shed,Black bug bit a big black bear assonance:
"Try to light the fire","It's hot and it's monotonous."
Explanation: