The variable that influences human variability and differences in response to medications is age, weight and Genetics. Thus, option (D) is correct.
Medication refers to the medicine given to the patient in order to cure the disease. It is in the form of the dose that contains certain ingredients in form of tablets, creams, capsules etc.
Age, weight, and genetics are factors that determine human variability and variances in reaction to drugs. Therefore, it can be concluded that option (D) is correct.
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Your question is incomplete, but most probably the full question was...
A. Age
B. weight
C. Genetics
D. All the above.
