Based on a thorough analysis of the concepts of 'Surface Traits' and 'Source Traits' under Raymond Cattell's 'Trait Theory of Personality' and the 'Sixteen Personality Factor Questionnaire' (16PF) developed by him, which of the following statements is most authentic and true from a philosophical and scientific perspective?

Understanding Raymond Cattell's Trait Theory

Raymond Cattell used Factor Analysis to understand personality in his trait theory. He categorized observable behaviors as Surface Traits, which are directly visible, and the underlying fundamental determinants as Source Traits, which form the true structure of personality.

• Surface Traits: Readily observable clusters of behavior.
• Source Traits: Underlying, stable structural units of personality.
• 16PF Questionnaire: Developed by Cattell to measure these 16 fundamental source traits.