For part A. the answer is C because the word fungus has a preffix which is the same in the word Fungi so its pretty obvious you should know, For Part B the answer is heterotrophs because fungi eat of of dead animals or decomposed bacteria (heterotrophs mean organisms that cant make food and autotrophs are organisms that can make their own food) For Part C The answer is multicellular because its not a bacteria, For Part D its not a plant because plants have cells that have nucleous and its not an animal because its not from the animalia kingdom, and its not a protist becuase its a eukaryotic organism that is not a plant, animal, or fungus, and its not a bacteria because fungus eats bacteria.
