Final answer:
The correct amount of medication is related to the Right dose of medication administration. The oral route is most suitable for home administration of an antimicrobial for a systemic infection.
Step-by-step explanation:
Giving the correct amount of a medication would be following the Right dose of medication administration. This is because the dosage is a critical aspect of treatment to ensure therapeutic effects without significant toxicity. Ensuring the right dose is particularly crucial for patients who might have altered metabolism or clearance due to liver or kidney dysfunction, which may result in increased drug levels and potential toxicity. As for the appropriate route of administration at home for an antimicrobial to treat a systemic infection, the oral route would be most convenient and appropriate (Option A). Intravenous (IV) administration could be effective but is less practical for home administration. The topical route is not suitable for systemic infections, and the parenteral route generally includes methods such as intravenous and intramuscular injections, which would need professional assistance for home administration.