Final answer:
The best step for the student is to use context clues to guess the meaning of 'déjà vu' in the sentence.
Step-by-step explanation:
The best step for the student to take when encountering the word 'déjà vu' in the sentence is to B. Use context clues in the sentence to guess the meaning of the word, and then try out that meaning in the sentence. Context clues are the details in the sentence or surrounding sentences that help to infer the meaning of an unfamiliar word. In this case, the mention of 'strange new city' suggests that the character is experiencing a feeling of familiarity or recognition.