What was disrupting the flow of supplies and soldiers to Britain in 1942? German fighter planes launched from France severe weather that occurred in the Atlantic that year constant breakdowns of British radar equipment German submarines that hunted in "wolf packs"

German submarines that hunted in "wolf packs" was disrupting the flow of supplies and soldiers to Britain in 1942. The correct option among all the options given in the question is the last option. The battle in the Atlantic ocean was a very critical war that the Germans were fighting against the navies of Great Britain and the United States of America.