Before taking office as first president of the United States, George Washington played a leading role in the American Revolution. He led the Continental Army during the Revolutionary War and presided over the convention that drafted the Constitution. In 1778, Washington was the unanimous choice of the electors for president. He served two terms in office and then voluntarily didn't run for a third. He set a precedent of only serving two terms that every president followed until FDR.
What is the purpose of the underlined sentence in the passage above?
A
It supports the claim that Washington played a major role in the American Revolution.
B
It introduces the Constitutional Convention before describing it in more detail.
C
It sets up a contrast between Washington’s achievements and those of other presidents.
D
It supports the claim that Washington was more skilled as a soldier than as a politician.