Which of the following is a medical doctor? a. psychologist b. psychiatrist c. social worker d. case manager

The answer is option B "psychiatrist."  Psychiatrist are specialized in medicine and on finding cures for common diseases which would make them doctors. Also its not option A because a  psychologist is a person who studies in behaviors which is a therapist, its not option C because a social worker works mainly in families but not for the health. Its also not option D because a case manager who is placed to render court cases.

Hope this helps!

The answer would be sand and gravel

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