Question

fealty means :
the study of population demographics through the
census
the quality of being rigid and rigorously severe
the loyalty that one owes to a country, sovereign, or
lord
the quality of being so overabundant that prices fall

Explanation:

The word "fealty" is related to loyalty. It specifically refers to the loyalty that one owes to a country, sovereign, or lord.

Answer:

the loyalty that one owes to a country, sovereign, or lord