A nurse is reviewing the medical record of a client who is experiencing delirium. Which of the following medications should the nurse identify as a cause of this disorder?

Choice A reason: Benzodiazepines depress the central nervous system and are a well-known cause of delirium, particularly in older adults. They can impair attention, cognition, and level of consciousness, making them a common medication-related cause of acute confusion. Choice B reason: Amphetamines are stimulants and may cause agitation or anxiety, but they are not among the most common causes of delirium, especially when compared to sedative-hypnotics. Choice C reason: Although some antihistamines can contribute to confusion due to anticholinergic effects, benzodiazepines are more strongly associated with delirium and are a classic cause emphasized in clinical assessment. Choice D reason: Sertraline, a selective serotonin reuptake inhibitor, is generally not associated with delirium and is often used safely in many populations, including older adults, when monitored appropriately.