Which best explains how the institutional revolutionary party (pri) maintained power in mexico for many years?

it defeated opposition parties by controlling congress and using election fraud.
it ruled so well that people prospered and opposing parties did not succeed.
it acted like a dictatorship and jailed those who opposed the way they ruled.
it offered the working class many benefits and kept dissension to a minimum.

I believe the answer is: It defeated opposition parties by controlling congress and using election fraud.

The Institutional Revolutionary Party was known to advocating an increase in government control toward any resources and porperty which exist in Mexico. The party managed to hold uninterrupted power for more than 70 years by rigging election and controlling the legislative process in Congressional seat.

the main inference that can be drawn from jean jacques rousseau's book the social contract is: a. people can enjoy civil and physical freedom, even if it sometimes harms society.

this isn't a question and if you're going to list things be kind and use commas.