Final answer:
A harmonious relationship is characterized by being pleasant and cordial, reflecting goodwill and compatibility between individuals.
Step-by-step explanation:
A harmonious relationship is one that is B) Pleasant. The term 'harmonious' in this context refers to a relationship where the individuals get along well and there is a sense of good will, compatibility, and peace. In fact, harmony can be often associated with music which is reflected in a consistent and orderly arrangement of sounds that provides a pleasing effect. However, in the context of describing a relationship, it implies a smooth and cordial interaction between people.