Answer:
the answer is d.first letter
The answer to your question is
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That is because a plot best represents a part of a reality and by imitating parts of reality we can learn from them. In tragedies, you observe people better than you and you learn of virtues, while in comedies you observe people worse than you and you learn of bad behavior.
While congratulating her colleague on her promotion, Kate should focus the message on the receiver.
Explanation:
As the person in focus is Kate's colleague who has got a promotion and not Kate herself, it would sound more appropriate if Kate talks about her colleague's achievement instead of herself. It is an important moment in the life and career of Kate's colleague and she deserves the accolade.
It would not be considered quiet civilized for Kate to talk about herself on such occasion. In her letter, Kate should keep the focus on her colleague's achievements.