I believe it is written constitution so B.
Answer:
C. a big party where everyone in the town would help to build a person's house
Explanation:
Typically, house-raising is more popular in rural community and almost never happen in Urban Area. In most cases, it's held to help out the neighbor who somehow experiencing some unfortunate disaster (House broke down because of flooding, burned because of gas leak, etc)
The materials used in house-raising usually came from the environment around the neighborhood. In United States , house-raising is most common in states such as Louisiana and Vermont.
Monasteries were religous communities, they served as a place of comfort and community. A monasterie was sort of like a safe haven at the time because church and religion were major factors and everybody, especially knights, valued religon.
The one that is an example of a social barrier to cultural diffusion is :
Laws that prohibit western-style clothing
This will prevent a lot of western people to enter that specific region because they're afraid to get into trouble
hope this helps