The answer for this case is number one.
Remember that by properties of exponents:
Same basis, the exponents are added.
We have then the following:
(9 ^ (1/2)) ^ 2 = (9 ^ (1/2)) * (9 ^ (1/2)) = (9) ^ (1/2 + 1/2) = (9) ^ (2/2) = (9) ^ (1) = 9
answer
number one.
