Nina was upset while shopping for a dress because she was worried about the baby sparrows. Let's explore this further.

Nina's concern for the baby sparrows:
Nina's worry about the baby sparrows was the primary reason for her upset while shopping for a dress. This suggests that Nina cares deeply about animals and their well-being.

The context of the situation:
To understand why Nina was upset, we need to consider the context of the situation. It is likely that Nina came across a nest of baby sparrows in a tree or in the vicinity of the dress shop. Perhaps she noticed the parent sparrows flying back and forth to the nest, indicating that they were feeding their young. This observation likely triggered Nina's concern for the baby sparrows and made her feel upset.

Reasons for Nina's upset:
1. Empathy: Nina's upset can be attributed to her empathetic nature. She could have felt a strong emotional connection to the baby sparrows, imagining them hungry and vulnerable in the nest while their parents were away. This empathy towards animals is a commendable trait, showing that Nina is kind-hearted and compassionate.

2. Feeling responsible: Nina might have felt a sense of responsibility towards the baby sparrows. She could have been worried that her presence near the nest or the disturbance caused by the shopping activities might negatively impact the baby sparrows or their parents' ability to care for them.

3. Prioritizing animal welfare: Nina's upset can also be seen as a reflection of her priorities. She may value the welfare of animals over her personal desires or needs. In this case, Nina might have initially been excited about shopping for a dress but felt conflicted when she realized that her actions could potentially harm the baby sparrows.

Conclusion:
In conclusion, Nina was upset while shopping for a dress because she was worried about the baby sparrows. Her empathy towards animals, sense of responsibility, and prioritization of animal welfare were likely the main factors contributing to her upset. This episode highlights Nina's kind-hearted nature and her ability to empathize with other living beings.

Nina was upset while shopping because she was worried about the baby sparrows.