The answer is
C
Wind, air, and living things
It was used to recognise the value of people (High and Low) and gave opportunities and respect to the high class people and not to the low class. Anyways, this was not a good idea as it discriminated people. In present India, caste system is not used as it causes Inequality.
Hope it Helped!
Excavating means digging a hole or channel
I hope I helped :)
Answer:
Due difference in cultural beliefs.
Explanation:
The choice of co-sleeping or independent sleeping is a good example of a custom complex, and the underlying cultural beliefs because in some of the culture, co-sleeping is considered as a bad habit and prohibited by the culture but encourages independent sleeping while on the other hand, some culture allows the co-sleeping due to no prohibition in their cultural believes so we can say that custom complex is responsible for this choice of sleeping.
By reading and through context, my guess would be through integration.
