Answer:
Option c is correct that is exponential function.
Step-by-step explanation:
We have been given a function:

Since, the function has something in power that is in its exponent.
Therefore, The given function is exponential
Therefore, option c is correct.
The function is not quadratic because quadratic function is of degree 2
The function is not square root because there is no square root symbol.
The function is not logarithmic because there is not written log anywhere.