Answer asap! an explanation is a must requirement in order to receive points and the brainliest answer. you.

Remmber pemdas or gemdas or bodmas or whatever

exponential laws
(x^m)^n=x^(mn)

ok so

(3^2)(2a)^(3/2))^2=
(3^2)(2a)^((3/2)*2)=
(3^2)(2a))^(6/2)=
(3^2)(2a)^3=
(3^2)(8a^3)^3=
(9)(8a^3)=
72a^3

2nd one from left

The answer to the question is d