I need help with choosing the right multiple choice anwser.

Notice that:
[tex]\begin{gathered} y(1)=5, \\ y(2)=5^2=25, \\ . \\ . \\ . \end{gathered}[/tex]Therefore, in general, as x grows, y(x) will also grow. If instead of 5 you have a number smaller than 1, then as x gets larger y(x) would get smaller.
Answer: growth; because 5>1.