Final answer:
B. Paint thinner is an inhalant, a substance whose fumes can be sniffed to get high, and it can be fatal even on first use. Nicotine and caffeine are stimulants but not termed as inhalants in this context; cannabis is usually smoked or ingested.
Step-by-step explanation:
The correct answer to the question is B. Paint thinner. Paint thinner is an example of an inhalant, which refers to a variety of substances that give off fumes that can be breathed in to get a psychoactive or mind-altering effect. Although commonly associated with spraying and sniffing, respiratory exposure to chemical vapors can also occur through direct inhalation from a container. Inhalants are particularly dangerous as they can be fatal even on the first use, leading to "sudden sniffing death", which can result from heart failure or asphyxiation.
While nicotine and caffeine are both stimulants, they are generally ingested in different ways, such as smoking or chewing tobacco for nicotine and drinking beverages like coffee for caffeine. Moreover, nicotine addiction is well-documented, and it is associated with respiratory and cardiac disease. Caffeine, on the other hand, is widely consumed with fewer direct risks when taken in typical amounts. Cannabis is another substance that is typically smoked or ingested – it is not typically classified as an inhalant when referred to in this context.