Answer :

sqdancefan

Exponentiation is the way we write repeated multiplication. That is,

A×A = A²

If the value of A is a fraction, the exponent applies to the whole fraction.

(3/2)×(3/2) = (3/2)²

The appropriate choice for your product of 4 identical fractions is

... (3/2)⁴ . . . . . matches the last selection

That would be the last option

(3/2)^4