B. Ellos son.
Explanation:
Ellos translates into a masculine or mixed-gendered “They”. Son just means are.
Nosotros is out because it’s like a “we” and same goes for vosotros.
Es means is more than it means are.
Estos means these.
Answer:
prefieren
Explanation:
is asking them directly if they like a romantic dinner
Answer:
translated as Not my brother, To my friends.
Answer: Cuestan.
Explanation: Cuanto means How much in english, so the question is asking how much those books are going to cost. Whenever you see a Cuanto in a question like that, assume it's talking about a number of something, or money. So Cuestan means cost, in the terms of "How much does this item cost?".