Final answer:
The acronym "IM" stands for intramuscular. Which is an injection method where medication is administered directly into the muscles, usually to ensure rapid absorption and extended activity of the medication.
The correct answer is options 2.
Step-by-step explanation:
The acronym "IM" stands for intramuscular. It is a term commonly used in the medical field to describe a method of injection where medication is delivered directly into the muscles. This route of administration is used for medications that require rapid absorption by large muscles and can maintain the medicine's activity for a longer duration than some other methods.
In contrast, intravenous means injecting directly into the bloodstream, and subcutaneous refers to injection into the layer of skin directly below the dermis and epidermis, collectively known as the subcutaneous tissue. So, The correct answer is options 2.