Question

data source: united states national oceanic and atmospheric administration/earth system research laboratory, physical sciences division. based on the temperature measurements, which outlined area better fits the definition of an air mass? area a area b

Explanation:

An air - mass is a large volume of air in the atmosphere that has relatively uniform temperature and humidity. Area B appears to have more uniform temperature (similar color shading) compared to what we can assume Area A would be like if it were shown. Uniform temperature is a key characteristic of an air - mass.

Answer:

B. Area B