Filial piety is a Chinese concept (respect for elders) so I wonder whether you mean in China, but I'll answer generally:
Respect for those who have been there before us, and learning can give us invaluable information about what has worked in the past and what hasn't, which is a good input into a good government. Also respect for elders is also a good basis for a harmonious society.
Answer:
c. incentives
Explanation:
Adam Ferguson and John Millar are two great social philosopher who work on the development of the civic society. They have made large contributions to the area of sociology. According to them, industry and private property is a new phase in the development of human economy. Millar believed that economic progress of society will begin on the establishment of the private properties which will result in social organization and incentives in terms of high standard of living, well being of the society and employment.
Hence the correct answer is --
c. incentives
