Multi-select problem: How does the next paragraph end?

A person is seen standing in the middle of a gym holding a tennis racket. The person then begins hitting a birdie across the gym. the person

Select from: (a). continues hitting the sides while a person watches on the side.. (b). continues hitting moving his body throughout the gym creating a racket.. (c). continues to hit the balls towards each other.. (d). continuously hits the object back and fourth while looking to the camera..
(d).