Which of the following statements is true about Germany's use of u-boats

Answer: U-boats sank ships carrying civilians.

U-boat is a term that refers to military submarines operated by Germany during the First and Second World Wars. The primary targets of the u-boat campaigns were merchant convoys from the British Empire and the United States to the United Kingdom, the Soviet Union and the Allied territories in the Mediterranean.

However, u-boats occasionally attacked ships carrying civilians. One of the most renowed examples was that of the liner RMS Lusitania on May 7, 1915. The sinking claimed 1,198 lives, 128 of them American civilians.