Which organisms receive the most energy from those below them?

Option (B).

Explanation:

Natural selection may be defined as the process by which organisms adapt better in their environment, reproduce and produce their offsprings. Charles Darwin proposed the theory of natural selection.

According to Darwin, the natural selection may occur in the population if there is change in the natural environment of an organism. Large number of organisms may die due to the environment change but some members can survive and may adapt in that environment. Organism reproduce and pass down favorable traits onto their offspring.

Thus, the correct answer is option 2.