Concept: Culture influences how people think, work, and relate, so positive cultural changes can support progress in society.
Explanation:Culture is a way of life, including beliefs, customs, and values.
As society changes, some old cultural practices may be harmful or outdated and need to change.
Positive cultural changes can bring about unity, hard work, and modern ideas, which help a country to grow.
Therefore, changes in culture are important for national development.
Answer: D. national development