Answer:
Correct answer is A- Boycott all British goods .
Step-by-step explanation:
A is correct as Continental Congress decided this decision to be introduced from December of 1774.
B is not correct as the First Continental Congress was held in 1774, and this decision was brought in 1775.
C cannot be correct as Washington was elected as a president after the war. He was elected in 1789.
D is not correct as this type of measure was never imposed.