Question

what causes heavy floods?
desertification
heavy rain
heavy snow fall
burning of fossil fuels

Explanation:

Heavy rain can lead to an excessive amount of water in a short - time, overwhelming drainage systems and causing floods. Desertification is related to land degradation, heavy snowfall may cause floods when melting but not as directly as heavy rain, and burning of fossil fuels contributes to climate change rather than directly causing floods.

Answer:

B. Heavy rain