Social contract is some sort of social obligations that's expected to be done as a member of society (such as getting a job, provide for family, create products, etc)
This will result in contribution to the development of society, which to repay it, the society is arguably also need to give back to that person in form of safety nets such as welfare
The Muslim scholars of what historians call the School of Toledo (12th century) were responsible for the translation of many Greek texts to the Arabic and then to Latin. Because of these translations, the studying of those texts increased and they started to be read on European universities.
Many Toledo translations were important for major Renaissance scientists as Roger Bacon (c. 1219/20 – c. 1292) and Copernicus (1473-1543), for example.
The re-discovery of ancient Greek texts due to their translation from the School of Toledo is an example of cultural diffusion. The work done in Toledo kept those texts alive and being read until they found interested audiences in the rest of Europe.
I believe the answer is B. <span>B. They invented tools using stones and metal </span>
