Answer:
Which of the following did your answer include?
As the balloon’s altitude increases, its volume also increases.
At high altitude, the atmospheric pressure on the outside of the balloon is less that it is at Earth’s surface.
As the pressure on the outside of the balloon decreases, the balloon’s volume increases because the pressure inside the balloon pushes the balloon outward.
As the balloon’s volume increases, the pressure inside the balloon decreases until it is equal to the pressure on the outside of the balloon.
Step-by-step explanation:
Trust the milk.