Question

Which sentence uses the time-related term correctly?

A: Peter enjoys reading about American history, especially the last 40 years, or four decades.

B: Peter enjoys reading about American history, especially the last 40 years, or four millennia.

C: Peter enjoys reading about American history, especially the last 40 years, or four centuries.

D: Peter enjoys reading about American history, especially the last 40 years, or four eras.

Answer 1

it is A

Step-by-step explanation:

decades are equal to ten years