Tennis is many different things to many different people. That's a big part of the reason why you hear so much about it, it gets on TV, and the people who are really good at it get a lot of money for running around in their shorts while they play it on TV.
To people who hate tennis but have been told by their doctors that they'll shrivel up and die if they don't immediately take up a high intensity physically-demanding sport, tennis could reasonably be classified as an exercise program.
When that happens, the best answer from the choices provided would be the upper-case ' T ' for ' True ' .
