How did military leaders prevent democracy in brazil? check all that apply.
a) they regulated political parties.
b) they controlled elections.
c) they kidnapped dissenters.
d) they arrested legislators.
e) they killed dissenters.

I believe the answer is: 
C) They kidnapped dissenters.
D) They arrested legislators.
E) They killed dissenters

the dissenters refers to a group of people who refuse to conform to the regulations that made by the government.
At that time, the military leaders choose to kill, torture, and kidnap those people in order to spread fear and terror among the citizens and pressured them to obey the government.