Because it was the season of hilsa fish and in the court every courtier was discussing about hilsa fish instead of the problems that were going on in the kingdom

The correct answer is option 'C': everyone, including the courtiers, were talking about Hilsa fish.

Explanation:
In the given context, the speaker is upset because everyone in the court, including the courtiers, is discussing Hilsa fish. Let's break down the reasons why this particular situation made the speaker upset:

1. Importance of the Court: The speaker is in a court, which is typically a place where serious matters are discussed and decisions are made. It is a formal setting where important issues are brought forth. The speaker expects the court to be focused on serious matters.

2. Inappropriate Topic: Instead of discussing serious matters, the courtiers and others are talking about Hilsa fish. This topic seems trivial and irrelevant in the context of a court setting. The speaker might feel that it is a waste of time and not conducive to a productive discussion.

3. Lack of Focus: The fact that everyone, including the courtiers, is engaged in discussions about Hilsa fish indicates a lack of focus and discipline in the court. This could be seen as disrespectful towards the speaker and the purpose of the court.

4. Disruption of Order: Discussing a casual topic like Hilsa fish in a formal court setting creates a distraction and disrupts the order and decorum of the court. The court is meant to be a place of seriousness and professionalism, but the ongoing discussions about Hilsa fish undermine that atmosphere.

Overall, the speaker is upset because the court, which is supposed to be a place for serious discussions, is being sidetracked by irrelevant and casual conversations about Hilsa fish. This situation not only disrupts the order of the court but also undermines the importance and purpose of the court itself.