The answer is b !!!! Hope it helps
Air pressure decreases as altitude increases. this is because air pressure is caused by the gravity of earth, the gravity pulls on the air, compacting it and making a pressure.
But as we go higher, gravity decreases, causing less pull on the air resulting in less air pressure.<span />
That’s the color of the ball?
Newton's first law of motion best illustrates the principle of inertia<span />