In the image the diameter of the circle is the segment AC, whereas the radius of the center is either the segment AB or the segment CB. Since Amy walks from pint A to point B, she walks a distance equal to the radius of the center. Fraser on the other hand walks the entire diameter of the circle since he walks form point A to point C.
We can conclude that the correct answer is: <span>D. Amy walks a distance equal to the radius, and Fraser walks a distance equal to the diameter of the lawn.</span>
