Final answer:
The Continental Polar (D) air mass is responsible for bringing significant snowfall, such as three feet of snow to Buffalo, New York, due to its cold and moist characteristics.
Step-by-step explanation:
The type of air mass responsible for bringing three feet of snow to Buffalo, New York, would be Continental Polar (D). Type D climates are characterized by cold winters and can bring heavy snowfall to regions like Buffalo, which is near the Great Lakes and experiences significant lake-effect snow. This is in contrast to Maritime Tropical (A) and Continental Tropical (C) air masses, which are generally associated with warmer conditions, and Maritime Polar (B), which can bring snow but is typically associated with less severe winter weather compared to Continental Polar air masses.