When the president belongs to one political party and the Senate and the House of Representatives are controlled by another, the president's goals are harder to reach. As a result, the president may veto laws passed by Congress and use executive orders to create policies he or she agrees with. What prior knowledge could help you understand the meaning of this passage?
a- Who the current president is b- How long senators and representatives serve in Congress c- How politicians from different parties behave toward one another d- ow many executive orders are issued every year