What type of cloud is described as fat, fluffy, and typically brings rain?

The correct answer is based on the characteristics of the cloud type known as cumulonimbus. These clouds are indeed described as fat and fluffy, often towering and billowing, resembling the shape of cauliflower heads. Cumulonimbus clouds are associated with severe weather, including thunderstorms and heavy rain. They are capable of producing large amounts of precipitation due to their vertical development and can reach high altitudes.

In contrast, nimbostratus clouds are typically dense and gray, characterized by continuous, steady precipitation, but they lack the distinct fluffy appearance of cumulonimbus. Stratus clouds tend to form in layers and are more likely to produce drizzling rain rather than heavy downpours, giving them a flatter and more uniform appearance. Cirrus clouds are high-altitude clouds that are wispy and thin, indicating fair weather but not rain-producing.

Understanding these distinctions is crucial for identifying cloud types and their corresponding weather patterns, further emphasizing the role of cumulonimbus clouds in bringing substantial rainfall and often severe weather conditions.