art A:

Which statement BEST reveals the central idea of this poem?

A.
People are all crowded at the shoreline to mourn the passing of the ship's captain because he has been killed in a furious battle.

B.
People are celebrating the return of a ship, but they are shocked when they learn that nearly all of the crew has been slaughtered.

C.
People are celebrating the safe return of a ship, but they do not realize that the captain of the ship has died in battle.

D.
People are gathered to defend their shores against an enemy battleship, but they show mercy to the crew when they learn the captain is dead.

Multiple Choice Question
Part B:

Which pair of lines from the poem BEST supports the correct answer in Part A?

A.
O CAPTAIN! my Captain! our fearful trip is done;
The ship has weather'd every rack, the prize we sought is won;

B.
The port is near, the bells I hear, the people all exulting,
While follow eyes the steady keel, the vessel grim and daring:

C.
For you bouquets and ribbon'd wreaths–for you the shores a–crowding;
For you they call, the swaying mass, their eager faces turning;

D.
My father does not feel my arm, he has no pulse nor will;
The ship is anchor'd safe and sound, its voyage closed and done;

The pair of lines from the poem that BEST supports the correct answer in Part A is:

C. "For you bouquets and ribbon'd wreaths–for you the shores a–crowding;
For you they call, the swaying mass, their eager faces turning;"

These lines demonstrate that people are gathered at the shores to celebrate the safe return of a ship, but they do not realize that the captain has died in battle.