Final answer:
The correct answer is 4) diazepam.
Step-by-step explanation:
The induction dose of thiopental is commonly used for rapid induction of anesthesia. Among the options given, thiopental belongs to the barbiturate class of intravenous anesthetics. Therefore, the correct answer is 4) diazepam.
Thiopental, also known as sodium thiopental, is a short-acting intravenous anesthetic. It belongs to the class of drugs known as barbiturates. Thiopental is commonly used for induction of anesthesia, especially in situations where rapid onset and short duration of action are desired, such as in the induction phase of general anesthesia.