A particle is confined to rotate in a circular path decreasing linear speed, then which of the following is correct?

A particle is confined to rotate in a circular path with decreasing linear speed. Then which of the following is correct?

A particle moves in circular path with decreasing speed. Which of the following is correct.

A particle is made to move in circular path with decreasing speed. Which of the following is correct ?

An object moves in a circular path with a constant speed. Which one of the following statements is correct?

If a particle is moving on circular path with uniform speed,then which of the following physical quantity remains constant?

If a particle is moving on circular path with uniform speed,then which of the following physical quantity remains constant?