What idea did george washington introduce as president of the united states?

a.) the us president's first two years should be the most productive.
b.) us presidents should play an important role in maintaining world peace.
c.) us presidents should not belong to any political party.
d.) us presidents should run for election for only two terms.

D.) US presidents should run for election for only two terms.

Explanation:

George Washington did not run for a third term. He was basically pointing that two terms were more than enough for a president to show their work. It was an unwritten rule that was strictly followed until Roosevelt won for a third and fourth mandate. Than politicians started writing laws to prevent that from happening again.