The statements that best describe the movement of the bowling ball moving down a flat bowling lane at a constant speed are:
• C. Its movement shows Newton's first law of motion.
(An object in motion remains in motion at a constant velocity unless acted upon by an external force.)
• F. Its movement remains the same unless a force acts upon it.
(This correlates with Newton's first law, emphasizing that the bowling ball will continue its motion unchanged unless a force (like friction or collision) acts on it.)
Thus, the correct options are C and F.