Final answer:
Ben is asking Mal to attend a formal event with him.
Step-by-step explanation:
The significance of Ben asking Mal to go to the coronation with him is that Ben is asking Mal to attend a formal event with him. The coronation is typically a formal ceremony, and Ben's invitation suggests that he wants Mal to accompany him in a formal setting. This invitation could be seen as a sign of friendship or romantic interest, depending on the context of their relationship.