Harmonious feelings among your thoughts, feelings, and behaviours is the underlying principle of:

A) agreeable circumstances.
B) selective construction.
C) attitude constructs.
D) cognitive consistency.

Cognitive Consistency

Cognitive Consistency refers to the desire of individuals to maintain harmony and consistency among their beliefs, attitudes, and behaviors to avoid dissonance.

Thoughts

Mental considerations, reflections, or meditations, often reflecting one's cognitive processes or attitudes.

Feelings

The emotional responses or states that arise from one's circumstances, moods, or relationships with others.