Which of the following could be classified as a census ?

the school one seems important since the census helps distribute money to schools depending on population. people aren't required to tell anyone about their voting choices so I'm not sure why it would be part of the census. the last two seem like a marketing survey instead of a official census

to reform the distraught soviet union, the democratization of the communist party was promoted through party secretary mikhail gorbachev's policies of “perestroika” and “glasnost.” perestroika refers to the reconstruction of the political and economic system established by the communist party.

it is a : ) always outside of government control