Which of the following events that took place in the years preceding the Revolutionary War represented the most significant action on the part of the colonists against British authority?

The Boston Tea Party.

Explanation:

On December 16, 1773 , 342 chests of tea beloging to the British East India Company were thrown by a group of colonists to the sea in Boston, Massachusetts. It was a protest against heavy taxation and harsh treatment by British authorities. "Taxation without representation" was the slogan of a growing number of dissatisfied Americans who resented taxes dictated by the Crown without having the benefit of political representation in Parliament. The incident is called the Boston Tea Party.