Answer:
C.
Step-by-step explanation:
We have been given formula of a function and we are asked to find the function g(x) that represents the reflection of function f(x) across the x-axis.
Since we know that the rule of reflection of a function across x-axis is:
Since the value of our function f(x) is 4, so after reflecting across the x-axis it will be negative.
So after reflecting function f(x) across x-axis, we will get our new function g(x) as:
Therefore, the function represents a reflection of across the x-axis and option C is the correct choice.