WHAT DOES THIS PASSAGE MAINLY DISCUSS

46. - ON THI DAI HOC MON TIENG ANH DE TRAC NGHIEM SO 4
ON THI DAI HOC MON TIENG ANH DE TRAC NGHIEM SO 4

46. What does this passage mainly discuss?

A. Cures from plants.

B. The beginning of natural history.

C. Prehistoric man.

D. Early plants and animals.