Most of the rocks we study were formed in what era? A. Paleozoic
B. Cenozoic
C. Precambrian
D. Mesozoic?

I think that answer A is correct

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

hope this have a good day