A medical researcher wishes to determine if there is a relationship between the number of prescriptions written by pediatricians and the ages of the children for whom the prescriptions are written. She surveys all the pediatricians in a geographical region to collect her data. What is the response variable? OA. Pediatricians surveyed B. Number of children for whom prescriptions were written C. Age of the children for whom prescriptions were written D. Number of prescriptions written

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