Which of the following is NOT one of the enteral routes of administration?

The subcutaneous route is primarily used for parenteral administration, which involves delivering medication directly into the body through injection. In contrast, enteral routes of administration involve the gastrointestinal (GI) tract, where the medication is taken in and absorbed through the digestive system.

The oral route refers to medications taken by mouth, allowing them to be absorbed through the stomach and intestines. Sublingual administration involves placing medication under the tongue, where it can rapidly dissolve and be absorbed directly into the bloodstream, bypassing the digestive system. The rectal route involves inserting medication into the rectum, allowing it to be absorbed through the rectal mucosa into the circulatory system.

Thus, identifying the subcutaneous route as not being an enteral route is correct because it does not involve the GI tract, while the other options do.