Question

american colonists were forced to let british soldiers stay in their homes. this was one of several issues that led to
the passage of the declaratory act.
the boston massacre.
the non-importation agreement.
the stamp act

Explanation:

The Quartering Act (which forced colonists to house British soldiers) was a contributing factor to tensions that led to the Boston Massacre. The Declaratory Act was about British Parliament's authority. The Non - Importation Agreement was a colonial boycott measure. The Stamp Act was a tax on printed materials.

Answer:

the Boston Massacre.