What metaphor does the author use to help readers understand how the "fight or flight" response works in humans?

Question

A) a boss calling a meeting
B) the body is supercharged
C) a caveman running from a tiger
D) the heart is an automatic weapon

I am thinking it is d.

Answer 1

D sounds good to me :)

Answer 2

I have one more question. Can you maybe help me.
The author explains the "fight or flight" response by comparing and contrasting
A) humans to tigers
B) workers to bosses
C) modern man to cavemen
D) adrenaline to heart failure

I thinking d or b.

Answer 3

haha...the first one is my ELA midterm question...