Question

how did the destroyers for bases agreement of 1940 help britain?
it allowed britain to buy arms on loan.
it helped britain maintain its vital supply lines.
it helped britain recruit more soldiers.
it gave britain the newest american ships.

Explanation:

The 1940 Destroyers for Bases Agreement transferred 50 US old destroyers to Britain. Britain used these destroyers to combat German U-boats that were attacking its Atlantic supply convoys, thus protecting critical supply lines for food, weapons, and other essential goods. The other options are incorrect: the Lend-Lease Act allowed arms on loan, the agreement did not involve soldier recruitment, and the ships were not the newest American vessels.

Answer:

It helped Britain maintain its vital supply lines.