Answer:
I'm going to chose option D
Explanation:
I think this because it has taken a long time of technological upgrades and experiments to make what we know as prosthetics. Also they are basically robot body parts to replace what you lose. For all we know, they might make a prosthetic heart.
B:American contributions to the columbian exchange
Answer:
I want to say Thanksgiving.
Explanation:
Sorry if its wrong
