Please help it’s a test thank chu

We're not supposed to help on tests.  The police will delete this shortly.  Hi Katie!

This is definitely not a function.

A function has at most one y for any given x.  This one has 5 different ys for x=2.

not a function

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.