Answer:
C. All positive numbers and 0.
Explanation:
We have been given a function
. We are asked to find the range of our given function.
We know that when a function is in form
, then the range of the square root function is all values of y greater than or equal to k.
We can rewrite our given function as:

Since the value of k is 0, therefore, the range of our given function
that is all positive numbers and 0.