B. Which category of organisms is missing from the students' observations? (Mark the one best answer.)
O A The Sun
OB Producers
OC Decomposers
OD Tertiary consumers

the correct option is option d

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