Opportunity in general, did feudalism and manor relations promote movement from one social class to another?

No.

Explanation:

Feudalism and the Manor relations were based on the social classes, because of since the fall of the Roman Empire owners of the lands created a series of towns that were protected by heavy walls and since poor people needed protection from the Barbaric invasions, they worked for the landlords.

That said, social structures were strict and it was very uncommon for a person to move from being a peasant to being a landlord, because the social structure was made to prevent that.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.

the right answer is a