Explanation:

- Option 1: Patriotism

- Patriotism is a feeling of love and devotion towards one’s country.

- It is a non-economic activity because it is not profit-driven or financially motivated.

- Option 2: Teaching

- Teaching can be both economic and non-economic.

- When done professionally for a salary, it is an economic activity.

- Volunteering to teach without payment is a non-economic activity.

- Option 3: Sentiment

- Sentiment refers to emotions or feelings.

- It is a non-economic activity since it does not involve financial exchange.

- Option 4: Sympathy

- Sympathy involves feelings of compassion or concern.

- It is a non-economic activity as it is not aimed at generating income.

Correct Answer: Option 2: Teaching is not exclusively a non-economic activity.