1. The main idea of the text is focused on the specialty tea from Thai Nguyen, as it highlights the unique Tan Cuong tea, the methods of nurturing tea trees, the strategies to support businesses and farmers involved in tea cultivation, and the tourism opportunities related to tea farms. Therefore, the correct answer is:
A. The specialty tea from Thai Nguyen
2. What makes Tan Cuong Tea unique is the method of nurturing tea trees with organic fertilizer, ensuring they are free from harmful pesticide or chemical residues, and the traditional methods of harvesting and processing the tea leaves. Therefore, the correct answer is:
C. The organic nurturing of tea trees
3. The support to businesses, cooperatives, and farmers involved in tea cultivation in Thai Nguyen in recent years is aimed at preserving and expanding the unique Tan Cuong tea-producing region, as mentioned in the passage. Therefore, the correct answer is:
A. To preserve and expand the unique Tan Cuong tea-producing region