Our construction of perceptual hypotheses illustrates which of your text's unifying themes

A)  Psychology is empirical. 
B)  Behaviour is determined by multiple causes. 
C)  Psychology evolves in a sociohistorical context. 
D)  People's experience of the world is highly subjective.

Perceptual Hypotheses

Assumptions made by the brain in order to interpret sensory information and perceive the environment.

Psychology

The scientific study of the mind and behavior, encompassing a variety of fields including cognitive, biological, and social aspects.

Empirical

Is grounded on, revolves around, or can be authenticated by experiencing or witnessing phenomena directly, rather than by theoretical inference or logical suppositions.