Final answer:
The correct route of administration for the given instructions is rectally.
Step-by-step explanation:
The correct route of administration for the given instructions is rectally.
When a drug is inserted rectally, it means that it is being administered through the rectum. In this case, the suppository is placed in the rectum, where it dissolves and releases the medication into the bloodstream. This route of administration is often used when a patient is unable to take medications orally due to vomiting or other conditions.
Other routes of administration mentioned in the options are:
- Orally: taken by mouth
- Intramuscularly: injected into a muscle
- Subcutaneously: injected just under the skin
- Vaginally: inserted into the vagina
However, for the purpose of treating nausea and vomiting, the rectal route is the most suitable option.