Which agent is used to treat fungal infections?

The correct answer is antifungal, which specifically targets and eliminates fungal infections. Antifungal agents are designed to disrupt the growth or reproduction of fungi, allowing the body's immune system to effectively combat the infection. These medications can come in various forms, including topical applications, oral medications, and intravenous treatments, depending on the severity and location of the infection.

Antihistamines are primarily used to treat allergic reactions by blocking histamine receptors; they do not have the capability to address fungal infections. Antiseptics are substances that prevent the growth of pathogens on living tissue and can be used for cleaning wounds, but they are not specifically targeted at fungi. Antipyretics are medications that reduce fever and provide comfort from symptoms of illness, rather than treating the underlying cause, such as a fungal infection. Thus, antifungal is the appropriate choice for targeting and treating fungal infections directly.