Final answer:
A pharmacist with additional prescribing authorization can alter the dosage of medication when refilling prescriptions, which goes beyond the typical scope of standard licensed pharmacists(option a).
Step-by-step explanation:
The individual who can engage in altering the dosage of medication when refilling prescriptions is a pharmacist with additional prescribing authorization(option a).
Standard licensed pharmacists are not typically authorized to change medication dosages without a new prescription from the healthcare provider responsible for the initial prescription. Only with additional credentials and permissions can pharmacists manage patients' medications to this extent. This expanded role includes evaluating patient health, prescribing medications, and making adjustments to prescriptions, but it is heavily regulated and varies by state or region. This additional prescribing authority allows them to contribute significantly to medication management and patient care.