Flashing red lights at a railroad crossing mean
a. stop.
b. proceed, if it's safe.
c. yield to the train.
d. if no train is in sight, keep going.

The chinese government has tried to control its people in all of the following ways except: question 1 options: create and spread propaganda in the media censorship of the media allowing people to create their own social media deleting people's social media posts without their permission