why was capturing Quebec so important to the British during the French and Indian war?

Question

a. by gaining control of Quebec, the British could increase financial and military support from the colonists.
b. by gaining control of Quebec, the British would disrupt French supplies from reaching forts further north.
c. without capturing Quebec, the British would have to admit defeat and surrender to the French.
d. without capturing Quebec, the British would be unable to keep Fort Ticonderoga under their command

Answer 1

b. by gaining control of Quebec, the British would disrupt French supplies from reaching forts further north.