First of all, there is no reason to charge the wife - she is not doing anything wrong.
Also, it would not be a homicide, unless he kills his wife.
It is also not negligence, since he is actively abusing her.
So the correct answer is:
a. When the husband is charged, the case would be a criminal case.
Serfs paid the owner of the land (in the form of labor) to be able to live on the land and have protection, if the serf were to leave. It was usually an unspoken agreement that they serf would stay on the land. If you still need further information you might find some on http://www.thefinertimes.com/Middle-Ages/serfs-in-the-middle-ages.html
It ensures because it repeats over and over again.
Of, by, or appropriate to a court or judge
