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we need the passage to answer
I'd say D. expert power because expert power is when an employee ( or in your case the teacher) has a high set of knowledge/skills that other employees do not posses. Which by the information above about this teacher's PhD and thier experience, I assume that this teacher must have expert power.
B. Twisting is a non locomotor skill.
Answer:
Clinical psychologists make up the single largest specialty area in psychology. Clinicians are psychologists who assess, diagnose and treat mental illnesses. They frequently work in mental health centers, private or group practices or hospitals
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