5. "Human psychology helps to protect the environment and health of people."
Justify

To better understand how people think, perceive experiences and make choices, psychologists use experimental studies. They then transform the information into tools to help individuals make smarter decisions in their everyday lives.  

Based on a thorough understanding of how factors influence lifestyles, psychologists recognize and assist individuals to resolve the barriers that prevent them from making better choices. To help individuals perform at an optimum level, psychologists use psychological research.

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wellness is the state of being in good health, especially as an actively pursued goal.