Which of the following is a way that communist governments have sought to keep their people supporting their form of government?

Through propaganda.

Explanation:

They "brainwash" their own citizens in order for them to comply to their own government, often limiting the news they can view or hear and learn so that they do not have any "influence" on their individual thinking. They have propoganda advertisements and new sites that only promote what is "good' and anyone who says anything bad will be punished, causing people to become silent in order to escape persecution.

answer: study

explanation:

maybe if you get off your phone and start studying you might do well but that’s your decision if you want to stay in summer school

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.