Final answer:
Taking Ambien as prescribed for sleep is an example of legal instrumental use; this refers to the use of medication as directed by a healthcare provider for a specific, therapeutic purpose.
Step-by-step explanation:
Taking Ambien via prescription to get to sleep is an example of legal instrumental use. This categorization refers to the use of a drug prescribed by a healthcare professional for a specific health-related purpose. Ambien, which is a brand name for the drug zolpidem, is a sedative-hypnotic medication commonly prescribed for short-term treatment of insomnia.
Legal instrumental use is in contrast with illegal instrumental use (where a person might use a non-prescribed drug to achieve a certain effect, like using stimulants to improve academic performance), legal recreational use (such as drinking alcohol in moderation), and illegal recreational use (such as using drugs like marijuana in jurisdictions where it is not permitted by law).