Question

Which reason best explains why living things need carbon?

Answer 1

Answer:

Carbon Bonds are a source of energy

Step-by-step explanation:

If this were a free answer response question, I would say that the reason would be that carbon can form bonds with many other element, but it wasn't there, so the first option is the closest to my answer.

Answer 2

Answer:

I would go with A. it's the only one that makes sense