Which of the following structures could represent an amino acid that is found in a biological system? 
Definitions:
Attitudes
Mental positions or feelings toward a person, thing, or situation, influenced by an individual's experiences, beliefs, and emotions.
Traumatic Accident
A distressingly impactful or catastrophic event causing physical injury or psychological harm.
Resistant To Change
The inclination to oppose or struggle against modifications to one's routine, environment, work, or beliefs.
Automatic Attitudes
Immediate, reflexive responses that are influenced by underlying preferences and prejudices.
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