Injected into the large muscles.

• A. Oral administration
• B. Injected
• C. Subcutaneously
• D. Intramuscularly

Answer: (D)

Understanding routes of administration and where injections land helps explain why this description fits a specific method. Injecting into the large muscles corresponds to an intramuscular route. This places medicine directly into muscle tissue, which has a rich blood supply, allowing relatively quick absorption and the ability to deliver larger volumes than injections into fatty tissue.

Oral administration, by contrast, is swallowed and absorbed through the digestive system, not injected. Subcutaneous injections go into the fatty layer beneath the skin and tend to absorb more slowly than muscle tissue. The intramuscular route is chosen when a faster onset is desired or when the formulation requires delivery into muscle tissue, often using sites like the gluteal or deltoid muscles depending on the dose and patient.