Here are the best options for each blank:

7. In the past, villagers used natural ingredients to color ______________ such as turmeric for yellow and butterfly pea for blue.
**B. five-color sticky rice**

8. Before starting a long journey on a boat, Vietnamese fishermen would perform a specific ______________ to wish for good luck and safe passage.
**C. ritual**

9. Respect for elders was a ______________ tradition in Vietnam. Children were expected to listen and learn from their grandparents.
**B. deep-rooted**

10. Folk tales and songs were passed down from generation to generation. This helped to ______________ the cultural heritage of Vietnam.
**A. preserve**