Q: Photosynthesis is initiated by what hitting plants?


Read this paragraph and choose the correct option from the provided answers:

Every split second that sunlight hits that leaf, photosynthesis is initiated, bringing energy into the ecosystem. It could be said that this is one of the most important - if not the absolutely most important - biochemical reactions. And it all starts with the leaf.

 Choices:

- dirt

- air

- moisture

- sunlight


A:
sunlight