What fort will be the focus of the British naval attacked?

Fort Henry

Explanation:

Preparing Fort McHenry to receive an all-out naval attack by the British Navy fell on the shoulders of Major George Armistead. Working at a frantic pace, he called up reinforcements, ordered additional supplies such as food and ammunition, oversaw the training of recruits and worked directly with city leaders and militia units to develop battle plans.

In the bombardment

Throughout the 25-hour bombardment Armistead directed the fort's defenses and inspired the troops to keep morale high. One eyewitness during the battle remarked "He (Armistead) was everywhere at once." From fifteen to eighteen hundred shells were fired by the British and Armistead wrote that "A few of these fell short. A large proportion burst over us, throwing their fragments among us and threatening destruction." Direct casualties were four soldiers killed and 25 wounded.

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.