Final answer:
The oral medication form that ensures the fastest drug action is a liquid suspension, as it allows the drug to be absorbed quickly into the bloodstream. For home administration of antimicrobials, the oral route is commonly preferred unless the patient cannot take oral medications due to their condition.
Step-by-step explanation:
The oral medication form that will ensure rapid drug action is b. Liquid suspension. Liquid suspensions typically have the medication in a solution or suspension already dissolved or dispersed in a liquid carrier. They are absorbed more quickly than other solid forms because they do not require disintegration and dissolution in the stomach before they enter the bloodstream. Capsules might need to dissolve first, and tablets must disintegrate and dissolve. Enteric-coated pills are designed to pass through the stomach and dissolve in the intestine, which delays their absorption and onset of action, making them less suitable for rapid drug action.
Concerning home administration of antimicrobials to treat systemic infections, oral administration is often the most convenient route (A. oral), unless a patient is unable to take medications by mouth due to illness - in which case parenteral routes like B. intravenous or D. parenteral would be used, typically in a healthcare setting.