The process of photosynthesis ultimately makes energy available to:

Photosynthesis is the process through which organisms, primarily plants, algae, and some bacteria, convert light energy from the sun into chemical energy stored in glucose. This process produces oxygen as a byproduct and forms the base of the food chain.

The correct answer indicates that nearly all life on Earth ultimately benefits from the energy produced through photosynthesis. This is true because photosynthetic organisms serve as primary producers, creating the energy-rich organic matter that is then consumed by herbivores, carnivores, and omnivores. Even organisms like scavengers and decomposers depend on the energy captured by photosynthesis, as they break down organic materials that originated from these primary producers.

In contrast, plants and only herbivores are too limited in scope, as they don't encompass the full range of organisms that rely on photosynthesis for energy. Marine animals can certainly benefit from the energy produced through photosynthesis, especially those at lower trophic levels, but they are not the sole beneficiaries, making the broader answer about nearly all life on Earth more encompassing and accurate.