Psychologists who adopt a(n) perspective look for a physical cause for a particular behavior.

Psychologists who adopt a Biological perspective look for a physical cause for a particular behavior.

Explanation:

The biological perspective also known as Biopsychology, that is the principle of biology which is essential to the research and study of behavorial and mental processes of the human mind. The subfields of biological psychology are neuropsychology, behavioral psychology, and cognitive psychology.

Through this, one can learn and know about the developmental, physiological, and genetic mechanism of behavior in people and animals alike. Those psychologists that adopt a biological perspective look for a certain physical reason for specific behavior.  

taking a bath requires the most water out of the given options because it takes a significant amount of water in order to fill a bathtub.

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