The Reason Britain Needed to Control the Ohio Valley Was

The reason Britain needed to control the Ohio Valley was to

A) continue its expansion west in North America and block French land-grabbing and influence.
B) ensure defeat of the French in the War of Jenkins Ear.
C) halt the growth of Spanish imposition in North America.
D) secure the Mississippi River and continue pushing further south to control all of Mexico.
E) link their Canadian holdings with those of the lower Mississippi Valley.