Question

The eon that we are currently in is the
a. oligocene
b. phanerozoic
c. archean
d. proterozoic

Answer 1

Answer would be b. phanerozoic 

Answer 2

D. Phanerozoic  is the answer

This is when you would expect to find fossil evidence of the evolution of insects. Animals are multicellular and have shells during this eon. Insects have exoskeletons made of chitin