Answer:
B. A Midsummer Night's Dream
Step-by-step explanation:
Mendelssohn was born in a high class family, and because of that, had lots of exposure to music. His parents hosted musical performances in their home for all their high societal friends. In one of these events, Felix performed his overture to A Midsummer Night's Dream for the first time with his sister as a duet on the piano. He orchestrated the piece shortly after this event.