Answer:
Graph A
Explanation:
Lori is riding in a circular track in which Teri is standing at the center. With the passage of time, there would be no effect on the distance between Lori and Teri. The distance will remain the same because Teri is not moving. She is standing still. So consider her the center of a circle whose circumference is Lori riding bicycle while the radius at any point will be equal.