"time, like water, sits in a pot unable to boil if your eye isn't constantly on it."
what two things are compared using a simile in this sentence?
a) time and water
b) a pot and water
c) city and country
d) boiling water and freezing water

Similies are statements that compare two things, usually with the word "like" or "as".
Examples:
Crazy like a fox.
As brave as a lion

So, what two things are being compared in this?
So first we see "time". So that is obviously on of the two being compared. The next thing said is, "like water". So, now we know that time and water are being compared, or, answer A.

I hope I helped! Message me if you need more help :)

~Olivia