The correct answer is A. eagerness.
Eagerness is a feeling of excitement and anticipation about something that is going to happen. It is often associated with positive emotions such as happiness, joy, and excitement. Eagerness can be caused by a variety of things, such as the anticipation of a new experience, the possibility of success, or the desire to achieve a goal.
In the context of the question, Harish displays enthusiasm whenever he is posed with a problem. This suggests that he is excited and motivated to solve the problem. He is likely to approach the problem with a positive
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