Answer:
A. Alexander Hamilton
Step-by-step explanation:
Alexander Hamilton was one of the Founding Fathers of the United States, and a Federalist who supported a strong centralized government (and not strong states), in which the chief of the nation could actively participate in the national interest, instead of just performing ceremonial duties.
Likewise, as one of the authors of the Federalist Papers (1787) and an opponent of the Articles of Confederation, Hamilton defended the newly proposed Constitution in order to help to ratify it, arguing that its ratification would preserve the Union and empower the federal government to act firmly and coherently in the national interest.