Is the process in which food is broken down into pieces small enough for the body to use effectively. is it ingestion digestion urination respiration

Yes, it is b. Digestion is the process of breaking down food.

When the ball is rising up, it gains kinetic energy. when the ball reaches the very top, it will have all potential energy, until it falls back down and gains it kinetic energy. finally when you catch the ball or it falls back down, it would have gained its potential energy back.