Where does the energy needed for photosynthesis come from

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a