Answer:
Fossil A: Heterotrophs
Fossil B: Autotrophs
Fossil C: Heterotrophs
Fossil D: Heterotrophs
Explanation:
I'm not 100% sure of the answer but I'll explain:
Fossil A is a heterotroph because it looks like a snail shell and snails eat other things for energy (keep in mind heterotrophs eat other things for energy while autotrophs make their own energy through the sun)
Fossil B is an autotroph because it looks like a fern which is a plant and plants use the sun for energy
Fossil C is a heterotroph because it looks like a centipede or some arthropod which eat other things for energy
Fossil D looks like a brachiopod which eats other things for energy
(If you want to fact check me you can search each of the organisms and how they get energy)
