Please help! or explain it to me

The answer would be (C), or the third option. Ok, so we understand that the leading coefficient is positive and the degree of this polynomial is even; thus, the function would face in an upward direction, with both ends pointing up.

Since this is a relatively simple, we call this a parabola or parabolic function.

Therefore, we would choose the answers in which the y-values are in a positive interval. III & IV are the only options that meet this criteria. Please let me know if you have further questions! :-)