To identify what constitutes a "stirred up" state of an organism.

The question asks to identify what constitutes a "stirred up" state of an organism.

Let's analyze the options:

• a. Behaviour: This refers to the actions or reactions of an organism, often in response to stimuli. While a "stirred up" state can influence behavior, behavior itself is not the state.
• b. Personality: This describes the characteristic patterns of thoughts, feelings, and behaviors that make an individual unique. It is a relatively stable trait, not a temporary "stirred up" state.
• c. Emotion: Emotions are complex psychological states that involve three distinct components: a subjective experience, a physiological response, and a behavioral or expressive response. A "stirred up" state, characterized by physiological arousal (e.g., increased heart rate, rapid breathing) and intense feelings, is a hallmark of emotion (e.g., excitement, fear, anger).
• d. Physique: This refers to the physical build or body structure of an organism. It has no direct relation to a "stirred up" psychological state.

Based on these definitions, emotion best describes a "stirred up" state of an organism.

The correct option is:
c. Emotion