Why Was There Widespread Popular Support for the Measures Adopted

Why was there widespread popular support for the measures adopted by the First Continental Congress?

A) Before any measure could be introduced in the Congress, it had to be approved by three-fourths of the colonial assemblies.
B) Widespread polling had been undertaken in the months before the Congress convened, so the delegates knew what the colonists would accept.
C) The colonists were so frustrated that they willingly accepted any measure that had an anti-British tone.
D) Before the Congress convened, many colonists had participated in open meetings in which they had pledged to support the Congress's decisions.