Answer:
(Not wanting to spend or use something)
Explanation:
Like someone or something really cheap, not wanting to use something in a way that it is a waste.
A man's car broke down, he didn't want to spend any money repairing it so he did it himself.
Or could just mean being careful with your resources.
I think A is the answer it makes the most sense to me
Biological fitness or darwinian fitness there the same thing
The surface area is used to get substances in or out through the cell's membrane.
