Yes, I am confident in that response. The colonists' primary reaction to the Townshend Acts, which imposed taxes on various goods imported to the colonies, included organizing boycotts of British goods as a way to protest the taxation without representation. These boycotts aimed to demonstrate to the British government that the tax was unfair and to exert economic pressure.
The other options presented either mischaracterize the responses or inaccurately link them to specific events (e.g., the Boston Massacre was not organized as a boycott). Thus, the statement about organizing numerous boycotts is the most accurate summary of colonists' responses to the Townshend Acts.