Question

What defines an air mass?

The humidity is consistent at a specific altitude.

The temperature is consistent at a specific altitude.

The temperature and humidity are consistent at a specific altitude.

The temperature and humidity are consistent at all altitudes.

Answer 1

Yea its D for correct answer

Answer 2

Answer - The temperature and humidity are consistent at all altitudes.

Reason - Air mass is every where they adapt to a characteristic of above and below and any where. It's also identified by temperature and water vapor aka like evaporate tiny molecules.