Answer:
Option B.
Step-by-step explanation:
The given function is
Here, base is x and exponent is 8.
We need o check weather the given function is an exponential function or not.
The general form of an exponential function is
where, a is base, a > 0, and a ≠ 1.
In the given function the base is not a positive real number not equal to 1 and the exponent is not variable. So, the given function is not an exponential function.
Therefore, the correct option is B.