I'd be happy to help with that question!
1. Cultures that practice ancestor worship often adhere to the custom of **Filial piety**.
- **Filial piety** is the respect and reverence for one's ancestors, elders, and parents. It involves honoring and venerating one's ancestors through rituals, offerings, and prayers.
2. This custom ensures that their ancestor relatives are venerated and remembered for their contributions to the family and society.
So, in the context of the question, the correct answer is **Filial piety** as it directly relates to the practice of honoring and venerating ancestors in cultures that practice ancestor worship.
