Which type of agent is specifically used to kill fungi?

Fungicide is the term specifically used to identify agents that target and kill fungi. These substances work by disrupting the cell structure or metabolism of fungi, effectively preventing their growth and proliferation. Their application is vital in various settings, including agriculture, medicine, and various industries where fungal infections or infestations can be problematic.

Antibiotics are designed to combat bacteria, while antiseptics are used to prevent infection by inhibiting the growth of microorganisms on living tissue but are not necessarily targeted solely at fungi. Disinfectants, on the other hand, are used to eliminate pathogens on non-living surfaces and can include a wide range of agents, but they aren't exclusively for fungi and may not always be effective against all types of fungal spores.

Thus, the specificity of fungicides in targeting fungal organisms makes it the correct answer for agents that kill fungi.