Which of the following closed boston harbor?

stamp act
navigation acts < this one ?
townshend acts
intolerable acts

The Intolerable Acts closed Boston harbor.

Explanation:

The Intolerable Acts included the Boston Port Act. It was passed on March 31, 1774.

This law, a direct consequence of the Boston Tea Party, declared illegal the use of the port of Boston through a blockade, until the Royal Treasury and the East India Company were indemnfied. In other words, it closed the port of Boston to all ships, whatever the purpose of their trip. The settlers objected that the Boston Port Act punished all of Boston and not just the individuals who had destroyed the tea, and that this penalty was imposed without having had the opportunity to testify in their own defense.

Since the port of Boston was one of the main sources of supply for the citizens of Massachusetts, colonies as far away as South Carolina expressed their solidarity by sending supplies to the inhabitants of the Bay of Massachusetts; this meant the first step in the unification of the Thirteen Colonies. The First Continental Congress was convened in Philadelphia on September 5, 1774, in which the response of the colonies to the Boston Port Act and the other Intolerable Acts would be coordinated.

c

explanation:

increase in population