Which statement best describes how the geographic features of the indus River valley helped civilizations form?
A. Snowmelt from the mountains and yearly monsoons made the rivers
flood. The floods made the soil rich, which was good for farming.
B. The huge deserts around the valley protected the civilizations from
animals and invaders.
C. Mountains blocked the heavy storms from the Arabian Sea, preventing
the rivers from causing dangerous floods.
D. Cold winds from the mountains helped keep people cool in the winter,
while deserts helped keep people warm in the summer.