Which standard guided the behavior of the medieval knights?
a- benedictine rule
b- code of chivalry
c- justinians code
d- manor system

I believe the answer is: B- code of Chivalry

Code of chivalry would filled with a list of things that considered to be a correct behaviours that expected to be done by the knights. This code include things such as the correct circumstances where knights are allowed to fight, how they should speak or sit on public setting, how they should treat women, etc.

i honesty don't know, good luck tho dawg