Question

Study the following food chain: grass → rabbits → snakes → hawks. This chain supports the assumption that each population

Answer 1

grass → rabbits → snakes → hawks. This chain supports the assumption that each population supports the next tropic level
because it tells about the next tropic level and flow of energy from one to the next
so correct option i conclude is A 
hope it helps

Answer 2

The chain supports the assumption that each population : A. Supports the next trophic level.
Which means that the lower level will become the source of energy of the higher level organisms

Hope this helps