Final answer:
The drug that irritates the skin is Liniments.
Step-by-step explanation:
Out of the given options, the drug that irritates the skin is Liniments. Liniments are medicated liquid or lotion-like substances that are applied to the skin for their analgesic or therapeutic effects. They can cause irritation and redness when applied to the skin, especially if the individual has sensitive skin or is allergic to any of the ingredients in the liniment.