The quote below comes from a speech by dr. martin luther king, jr., in 1967:

we were taking the young black men who had been crippled by our society and sending them eight thousand miles away to guarantee liberties, which they had not found in southwest georgia and east harlem. we have been repeatedly faced with the cruel irony of watching negro and white boys on tv screens as they kill and die together for a nation that has been unable to seat them in the same schools.

which statement summarizes king's feeling about the vietnam war?

the united states must fight a distant war to protect the united states.
the vietnam war has caused inequality in the united states.
the vietnam war should not be broadcast on national television.
the united states must address inequality at home rather fighting abroad.

Actually, the correct answer is D "The United States must address inequality at home rather fighting abroad." :)

By reading the quote, we can figure out that the thought that:

The United States must address inequality at home rather fighting abroad.

Dr. Martin Luther King Jr. stated that the soldiers dying in Vietnam as always were the poor and needy, in the United States, those were usually the african american. He was fighting for the civil rights of the black people that were constantly and deliberately discriminated. He could not believe that the American government, the main responsible, was selling the idea of freedom and peace in another country, first, he thought the United States needed to solve its own problems. Dr. King also denounced that the money sent to the war was taken from the poor and black. This speech was titled Beyond Vietnam and was pronounced at Riverside Church in 1917.

The statement chosen clearly simplifies the things stated by Luther King Jr.  

The english explorer is Sir Francis Drake