What is a hypodermic needle used for?

A hypodermic needle is specifically designed for injecting substances into the body, primarily under the skin or into the muscle. When we consider option C, it accurately describes the function of a hypodermic needle, which is often used for subcutaneous injections. These injections deliver medication directly into the fatty tissue just beneath the skin, allowing for the medication to be absorbed into the bloodstream effectively.

The choice that suggests drawing blood only does not encompass the primary purpose of a hypodermic needle, which is more aligned with administering medications rather than exclusively obtaining blood samples. While hypodermic needles can be utilized for intramuscular injections, which is mentioned in another choice, other types of needles are typically preferred for that specific purpose. The option regarding administering oral medication is unrelated, as hypodermic needles are not used for oral routes; they are exclusively for parenteral administration, meaning they bypass the digestive system. Thus, option C appropriately reflects the standard use of a hypodermic needle for injection under the skin.