Answer:
C.
Explanation:
if a number has a exponent, it tells how many times is the number getting multiplied by itself. 6^4 has a 4 and that mean there are 4 "6s"
6^4=6*6*6*6
and then there is 6^3 which has a 3 and that means it has 3 "6s"
6^3=6*6*6
(6•6•6•6)*(6•6•6)