The answer is c I believe
Blood urea nitrogen (BUN) and creatinine tests can be used together to find the BUN-to-creatinine ratio (BUN:creatinine). A BUN-to-creatinine ratio can help your doctor check for problems, such as dehydration, that may cause abnormal BUN and creatinine levels.
Answer:Clinical psychology.
Cognitive psychology.
Behavioral psychology.
Biopsychology.
Explanation:Clinical psychology.
Cognitive psychology.
Behavioral psychology.
Biopsychology.