Answer:
The queen.
Step-by-step explanation:
A direct object is the noun/ noun phrase in the sentence who receives the action/ verb of the subject. The sentence structure generally remains- Subject+verb+object.
Now, looking at the given sentence, we can easily know that the subject in the sentence is the pronoun "everybody". And the verb is "listen". SO, the object/ direct receiver of the verb is "the queen".
Thus, the correct answer is "the queen".