What is defined as a huge body of air with uniform temperature and moisture characteristics?

The correct choice is defined as an air mass, which is a large body of air that exhibits relatively uniform temperature and moisture characteristics over a significant area. Air masses are classified based on their source regions and can influence weather patterns by moving across the earth's surface. For example, a maritime tropical air mass originates over warm ocean waters and brings warm, moist conditions when it moves inland.

The other options represent different weather phenomena. A weather front is a boundary between two air masses of different temperatures and humidity, leading to varying weather conditions. A hurricane is a tropical cyclone characterized by strong winds and heavy rainfall, forming over warm ocean waters. A thunderstorm is a localized weather event characterized by thunder, lightning, and often heavy precipitation. While all these phenomena are related to atmospheric conditions, the air mass stands out as the term that specifically describes a large, uniform body of air.