Final answer:
The square root of a perfect square is always the positive square root.
Step-by-step explanation:
The square root of a perfect square is the number that, when multiplied by itself, gives the perfect square as a result. For example, the square root of 25 is 5, because 5 multiplied by itself equals 25. Since the square root is a positive number, it is always the positive square root of the perfect square.