Uhh... answer D is the true answer
Answer:
I think it's C.
Explanation:
You didn't include a passage or anything but it takes time to make mirrors and it's a very complex process that also includes lots of liquids.
Sentences? How about this:
Hitting the tree put a dent in my car.
I found a stash of candy hidden under my brother's pillowcase.
Or if you need them both in one sentence:
I tried to get to the stash of food behind the metal door, but I could barely make a dent.
Is that what you needed?