Which of these behaviors is an example of chivalry? farming the land in return for protection/ rescuing someone who is in danger/ taking an oath of loyalty/ to a lord serving in the clergy

Rescuing someone who is in danger is an example of chivalry.

Chivalry as a code of conduct started to be recognized between 1170 and 1220 and it was strongly associated with the Christian medieval knighthood. Medieval literature helped popularize the code. In many of these literature creations, we can recall many of the behaviors that we know associated with chivalry. Even though there was never an official code of conduct for the chivalrous conduct, there are universal values associated with it, such as:

he supported the seperation of church and state. he also promoted religious tolerance.