Answer
$$
y=x^{4}-5x^{2}+7
$$
The graph of $y=x^{4}-5x^{2}+7$ has both ends
up, at most three turning points, and a $y$-intercept of $7$.
This is graph $I$.
Work Step by Step
$$
y=x^{4}-5x^{2}+7
$$
The graph of $y=x^{4}-5x^{2}+7$ has both ends
up, at most three turning points, and a $y$-intercept of $7$.
This is graph $I$.