Answer :
[tex]B)\text{ Exponential}[/tex]
Explanation
An exponential function is a Mathematical function in form
[tex]f(x)=a^x[/tex], where “x” is a variable and “a” is a constant which is called the base of the function and it should be greater than 0, the graph of this function is a cuve
so, the answer is
[tex]b)\text{ Exponential}[/tex]I hope this helps you