Final answer:
The correct dose of medicine for a person weighing 120.0 kilograms, given a recommended dose of 5.0 milligrams per kilogram, is 600 mg.
Step-by-step explanation:
To calculate the correct medicine dose for a person weighing 120.0 kilograms given the recommended dose is 5.0 milligrams per kilogram, we use the formula:
Dose (mg) = body weight (kg) × recommended dose (mg/kg)
Substituting the given values into the formula:
Dose = 120.0 kg × 5.0 mg/kg
Dose = 600 mg
Therefore, the correct dose for a person weighing 120.0 kilograms is 600 mg, which corresponds to option a.