Answer:
People in high altitudes have larger lungs as compared to lower altitudes.
Explanation:
Those people who lives at high altitudes have larger lungs in order to reduce the excessive ventilation of the lungs. There is shortage of oxygen at high altitudes because oxygen is a heavier gas so for storing more oxygen in the lungs the volume of lungs increases. Those people who lives at high altitudes have higher capacity of lungs as compared to people who lives at low altitude. To test this hypothesis we have to collect the data of two types of people such as people who lives at high altitude and people who lives at lower altitude. If the data shows larger lungs of people who lives at high altitude so our hypothesis is correct.
