I would say "Pet store as the four friends".
I think it is C, because if I'm right present principal is something that is happening presently? If so, C would be the answer because they "are doing" the exercises right now in context.
Answer:
D. Either of these changes can build tension and suspense.
Explanation:
When a story is presented chronologically, the story is presented in the sequence of events in which it would have occurred. Thus, events will be understood to logically follow one another as things unfold—the order is logical and surprises are rare.
Hope I helped! ☺
C. "My knees are killing me," he complained after the run.
