Question

in addition to the spring rainy season, which option below was a source of the flood water that brought fertile soil for growing crops?
melting snow
dams
canals
the surrounding seas

Explanation:

Melting snow can contribute to flood - water that deposits fertile soil for crops. Dams are man - made structures for water control, canals are for water distribution, and surrounding seas don't typically directly cause floods that bring fertile soil for crop - growing in the context of seasonal floods.

Answer:

melting snow