Final answer:
Alprazolam and Triazolam are short-acting benzodiazepines used to treat short-term symptoms of anxiety. They have a short half-life and can be taken "as needed." Oxazepam, another benzodiazepine, has a slower onset and wasn't listed in the context of being short-acting. The option (C) is correct.
Step-by-step explanation:
Among the options provided, the benzodiazepines with short half-lives, meaning they are short-acting, include both Alprazolam (Xanax) and Triazolam. These medications, along with Lorazepam (Ativan), are utilized to manage short-term symptoms of anxiety. The short half-life of these drugs is particularly beneficial for treating acute episodes of anxiety as they can be taken "as needed" and are less likely to accumulate in the body, which minimizes the likelihood of dependency and side effects. It is important to note that all benzodiazepines carry a risk of dependence and withdrawal symptoms if they are discontinued rapidly.
Oxazepam and Midazolam are also benzodiazepines, but they were not mentioned in the context of the given information. However, it is important to recognize that Oxazepam is one of the options that has a slower onset and is oftentimes used for treating anxiety over longer periods.
Other medications, such as beta-blockers, are also used to manage the physical symptoms of anxiety, but they are not within the scope of benzodiazepines and thus not relevant to the options provided in the original question. Therefore,option (C) is correct.