In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data:
f(x) = x²
Step 02:
functions (transformations):
h(x) = 1/5 x²
graph method:
h(x) = 1/5 x² ===> the graph is stretched horizontally by a factor of 1/5
The answer is:
C ) the graph is stretched horizontally by a factor of 1/5