The first choice is the right answer, that Polonius is sacrificing his daughter to trick Hamlet. This is when Polonius is convinced that Hamlet is lovesick over Ophelia, and when Hamlet calls him Jephthah, he fixates on the mention of his daughter, and neglects the context of Jephthah having sacrificed his daughter.
The correct answer is C. The heritage of black Americans. This is because Langston Hughes, like many other African-American writers of the time, drew heavy inspiration from Africa, and the cultural heritage brought into America by his ancestors.