Hows everyone day hope it is going good

When the subject of a sentence performs the action in the sentence the verb in the sentence is in the what ?

Which line from president reagan’s address sat moscow state university is a fact? a. democracy is the standard by which governments are measured. b. throughout the world, free markets are the model for growth. c. the key is freedom-freedom of thought, freedom of information, freedom of communication. d. every four years the american people choose a new president, and 1988 is one of those years.

Can someone me answer this english question