Step 1: Concept Identification: The question requires identifying the core components of emotion. Major psychological theories identify three primary components. Note that options A and D present identical choices ("Physical reaction"), which is presumed to be an error. These will be treated as a single element.
Step 2: Component Breakdown: The three universally recognized components of emotion are:
Physiological Arousal (Physical Reaction): Encompasses bodily responses to an emotion, such as increased heart rate, perspiration, or altered respiration. Options A and D correspond to this component and are therefore correct elements.
Subjective Experience: Refers to the individual's internal emotional state and perception (e.g., feelings of happiness, sadness, anger). Option B represents this component and is a correct element.
Behavioral or Expressive Component: Involves the observable outward manifestations of emotion, including facial expressions, posture, and actions (e.g., smiling in response to happiness, crying in response to sadness). This component is not explicitly enumerated.
Evaluation of presented items:
A. Physical reaction: Accurate.
B. Subjective experience: Accurate.
C. Attention: Attention is a cognitive function that can be influenced by emotion (e.g., fear can narrow focus on threats), but it is not typically classified as a fundamental component *of* emotion itself within prevailing models. Consequently, it is the incorrect item.
D. Physical reaction: Accurate (and redundant).
Step 3: Conclusion: The accurately identified elements are A, B, and D. Option C, "Attention," does not constitute a core component. Therefore, the most appropriate selection is "A, B and D only".