The best option which describes a presidential election campaign is an all-out effort to win the office of President. Option three is correct.
In the United States, the election of the president and the vice president constitutes an indirect election in which citizens of the United States who are registered to vote in one of the 50 U.S. states or in Washington, D.C. cast ballots for members of the U.S. Electoral College, known as electors instead of voting directly for the offices.
Historians did not learn much about the Harappan civilization from written sources because its writing system has not yet meen figured out. They learned much from building remains, like the drainage system, and where grains were stored.
