The first European novel is generally considered to be Don Quijote. It is a Spanish novel written by Miguel de Cervantes, considered by many to be the creator of the modern novel way back in the 17th century.
B. If I'm not mistaken but i can be wrong but I'm going with my gut on this answer.
Answer: A. Elenita versus the music of her parents' homeland.
Explanation: in literature, a conflict is a struggle between opposite forces, usually between a character (the main character or a very important one) and himself (internal conflict), society or another character (external conflict). In the given excerpt from Gravity by Judith Ortiz Cofer we can see an example of an external conflict between a character (Elenita) and the music of her parents' homeland, which her mother used to listen to in the evenings.
These lines are spoken by a captain who has been wounded in the war. He is relaying the information about Macbeth's brave fight against the enemy to King Duncan. He talks about how brave and valiant Macbeth was, so the audience can infer that he is a fierce warrior who will stop at nothing to ensure his win in a battle.