The correct answer is B. the Lusitania
Step-by-step explanation:
The Lusitania was one of the biggest British passenger liners when it was constructed in the early 20th century. This liner transported around 2000 people from Great Britain to New York City, U.S.A. However, in 1915, this liner was sunk by a German U-boat that attacked the liner when this was close to Ireland. As a result of this, around 1000 people died, and the conflict between the Allied Powers (including Great Britain) and the Central Powers (including German increased). Also, due to this event, the U.S. decided to enter the war, considering more than 100 US citizens died during the incident. Thus, it was the Lusitania the passenger liner a German U-boat sunk and that led to the death of more than 1000 people including more than 100 US citizens.