Can you guys help me please

c

Step-by-step explanation:

The factors of 27 are 1,3,9,27;

The factors of 45 are 1,3,5,9,15,45.

So, as you can see, the Greatest Common Factor or Divisor is 9, because it is the greatest number that divides evenly into all of them.

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.