Answer:
The correct answer option is d. 9.
Explanation:
We are given an expression
and we are supposed to simplify it.
We can also write
as
.
We know the power rule
which means that to raise a power to a power you need to multiply the exponents.
So multiplying the exponents to get:

3 gets cancelled by 3 so we are left with:

Therefore, the correct answer option is d. 9.