The correct statement about Alexander Hamilton during the Constitutional Convention is:
He strongly opposed the Articles of Confederation.
Hamilton was an advocate for a stronger central government and believed that the Articles of Confederation were inadequate for governing the nation. He did not propose the Virginia Plan (that was primarily drafted by James Madison), did not draft the New Jersey Plan (that was proposed by William Paterson), and did not facilitate the Great Compromise (which was an agreement between larger and smaller states regarding representation in Congress).