Which of the following was a result of Mao Zedong's communist reforms?
a) state-run farms became privately controlled
Ob) a serious drought occurred
Oc) many economic programs were unsuccessful
d) women lost many rights

He instituted education and economic reforms, but limited civil liberties

Explanation:

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.