An object that is accelerating may be:
a. not moving. (True; acceleration can occur even if the object starts from rest.) b. gaining speed. (True; acceleration includes speeding up.) c. changing direction. (True; acceleration can result from changing direction even if speed is constant.) d. traveling at a constant speed. (False; if an object is accelerating, it cannot be traveling at a constant speed.) e. slowing down. (True; deceleration is a form of acceleration.)
So the correct answers are a, b, c, and e.