Final answer:
A. Banquo. Macbeth alone sees Banquo's ghost at the feast, symbolizing his guilt and paranoia after murdering Banquo.
Step-by-step explanation:
A. Banquo. Only Macbeth could see the Ghost of Banquo at the feast. In Shakespeare's Macbeth, this haunting is a significant event that underscores the play's themes of guilt and the supernatural.
An explanation of this occurrence is integral to understanding Macbeth's psychological deterioration. After Macbeth murders Banquo to secure his throne and prevent Banquo's descendants from ruling, as prophesied by the witches, Banquo's ghost appears to Macbeth during a royal banquet. Macbeth's vision of Banquo's ghost is a manifestation of his remorse and paranoia, revealing the psychological torment he experiences as a consequence of his actions. While the ghost is invisible to others, Macbeth's reaction to the spectre further alienates him from his guests and hastens his eventual downfall. This spectral appearance emphasizes the play's exploration of ambition, power, and the consequences of usurpation.