Answer:
D. None
Explanation:
Given the function f(x) = 12, the function is only a constant with no degree. For a function to have roots, it must have at least degree of 1. Let us write the function f(x) = 12 in terms of x
f(x) = 12x⁰
From the function above it can be seen that the introduction of x⁰ can not in any way affect the function of x because x⁰ will return 1.
From the function, it can be seen that the highest power of the variable x is zero. This means that the function has no roots.
Hence, there are no real zeros of the function.