Final answer:
The most prominent complaint that colonists had with Britain was the Quartering Act of 1765, which required them to house British troops.
Step-by-step explanation:
One of the most prominent complaints that the colonists had with Britain was the British laws that required them to house soldiers, known as the Quartering Act of 1765. This act mandated that colonists provide housing and food for British troops stationed in the colonies. This was seen as a violation of their rights and an economic burden, especially for those who were poor farmers.