The answer could mostly be B, but if you had something else in mind go for it. Hope my answer helps tho :)
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Answer:veto
Explanation:
The president can just veto the law and doesn't have to use it.