Cumulonimbus clouds develop from which among the following clouds?

Correct option is A

The correct answer is (a) Cumulus congestus clouds.
Cumulonimbus clouds are massive, towering clouds that are capable of producing severe weather conditions such as thunderstorms, heavy rain, lightning, and even tornadoes. These clouds develop from Cumulus congestus clouds, which are large, vertically growing clouds.
Cumulus congestus is the transitional stage between simple cumulus clouds and cumulonimbus clouds. When the cumulus congestus clouds continue to grow in height and the atmospheric conditions are favorable (with sufficient moisture, instability, and upward movement of warm air), they can develop into cumulonimbus clouds, reaching heights of over 10,000 meters.
The other types of clouds mentioned (Nimbostratus, Altostratus, and Cirrocumulus) do not directly evolve into cumulonimbus clouds as they have different characteristics and formation processes.
Information Booster:
Cirrus Clouds: Thin, high clouds often form ahead of warm fronts or large-scale storm systems, giving early signs of weather change.
Cumulonimbus Clouds: Towering thunderstorm clouds, which can stretch from the lowest to the highest cloud levels, are the source of severe weather like lightning, hail, and tornadoes.
Stratus Clouds: Low-lying clouds that bring foggy or overcast weather, often seen during gloomy days.