Question

how is the wedding guest spellbound by the ancient mariner?why?

Answer 1

Answer:

The ancient mariner had a pair of glittering eyes that made heads roll.

The wedding guest was caught by the mariner through his skinny hands and the mariner started telling him his story.

The wedding guest felt spellbound by this gesture of the mariner and started listening to him as if he had casted a spell of magic on the guest.

Therefore, the ancient mariner's eyes did all the trick for him.