Which word or phrase is a synonym for the word doctrine?

Agroup of friends or family
Bmoral judgement
Cattitude
Dset of rules

Verified Answer :

The synonym of the word doctrine is Set of rules.

Answer: D) set of rules

Explanation: A doctrine is the set of teachings that are based on a belief system. It deals with the existing principles on a specific subject, usually with a claim of universal validity. An example of a famous doctrine is the Christian among other religious groups that also have their particular set of rules.