In the feudal contract, serfs were allowed to work land which belonged to a lord, but in return _____.
serfs owed a portion of the harvest to the lord, as well as other duties
the lords had to provide a fair market price for the goods
the serfs would get to own the land after working it for ten years
serfs had to give the entire harvest to the lords and eat at the lord's castle

Respuesta :

So the fact that the serfs were allowed to work on this land was what they got, what did they give in return? the option has to include something that would benefit the lords:
the answer is this one: (the last would be plausible too, but no, they did not get to eat in the castle!) 

serfs owed a portion of the harvest to the lord, as well as other duties