Final answer:
The question is likely about a narrative involving a poisoned garment sent by Medea, leading to a tragic wedding event which could correspond with options b) or c) -- Poisoned wine or A mysterious assassin.
Step-by-step explanation:
The question seems to be referencing a narrative or story where a prince is poisoned and killed at their wedding. A classical example of such a scenario is found in Greek mythology, specifically in the story of Medea. In this tale, Medea, driven by revenge, sends a poisoned cloak to her ex-husband's new bride. This cloak, upon being worn, caused her death, and subsequently the death of the king, who tried to save her. This aligns with option b) Poisoned wine if we are interpreting the 'wine' to be a metaphor for the wedding, or perhaps more fittingly with option c) A mysterious assassin if Medea herself is seen as the orchestrator working behind the scenes.