Refer to the graph shown. Which supply curve is perfectly inelastic? 
Definitions:
Behaviourism
A field of psychology that focuses on observable behaviors and disregards internal processes such as thoughts and emotions.
Psychological Perspective
An approach in psychology focusing on the mental processes and behaviors of individuals, encompassing various theories and methodologies.
Behaviourism
An approach in psychology focusing on observable behaviors, and discounting mental activities.
Psychoanalytic Theory
A theory developed by Freud that emphasizes unconscious psychological processes and contends that childhood experiences significantly influence adult personality.
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