If british and american troops opened a second front by attacking germany from the west, it would take pressure off the
a. pacific war.
c. italians.
b. soviet union.
d. french.

Correct B. Logically they were trying to avoid any contact with URSS

If British and Americans troops indeed would open a second front by attacking Germany from the west, it would take pressure off the Soviet Union who was fighting Germany on the east.

The correct answer therefore is B - Soviet union. And this is also what later on in the war happened with the landings in Normandy.