A developed economy is one that has a strong exporting industry that generates income for the country. Some examples of developed economies are the United States, England, Canada, France. Usually they call developed economies of first world.
The most diverse scientific studies demonstrate the positive relation between economic development and standard of living. The more developed a country's economy is, the better the quality of life for its citizens. The opposite is true, the less developed a country's economy, the worse a country's social indicators are.
I believe the answer is primary.
A) yes- definitely! many mental disorders are genetically motivated
b) yes! a mental disorder can be a result of for example child abuse
so we already see that d. must be the correct answer.
As for physical factors, I think head trauma could be a good example.
The revolution brought the colony to a state of insurrection and civil war. As slaves killed their masters and occupied and burned their plantations, white people defended themselves, then fled. The social order of the island crumbled and in an attempt to stop the violence, France abolished slavery.
<em>Hope this helped!</em>
<em>-</em><em>Namida</em>