Which type of immunodeficiency might be caused by the use of prescription drugs?

Acquired immunodeficiency is the correct answer because it refers to situations where the immune system becomes weakened due to external factors, such as certain prescription drugs. Many medications, particularly those used in chemotherapy, immunosuppressants, or corticosteroids, can significantly impair the immune system's ability to function effectively. This can lead to increased susceptibility to infections and other health issues.

In contrast, primary immunodeficiency refers to genetic or congenital disorders that result in a weakened immune system from birth. Inherited immunodeficiency also relates to genetic factors and is not influenced by external environmental factors like medications. Autoimmune disorders occur when the immune system mistakenly attacks the body's own cells, which is a different mechanism compared to deficiency in immune function caused by drugs. Thus, the focus on externally-induced factors and the role of medications are what make acquired immunodeficiency the right choice in this context.