Answer:
The right choice is:
B. by having German U-boats patrol the Atlantic Ocean and Caribbean Sea
Explanation:
With a navy inferior in both surface vessels and in firepower to Great Britain´s navy or to combined Allied navies, Nazi Germany gave an asymmetric response by developing and operating a large number of submarines that proved to be lethal and highly disruptive in the first yeas of the Second World War. Their main mission was to cut sea supply lines for Britain.
