Which herbicide is cited as irritating to the skin and mucous membranes and can cause vomiting, headaches, diarrhea, and confusion?

• A. 2,4-D
• B. Glyphosate
• C. Atrazine
• D. Dicamba

Answer: (A)

The main idea here is recognizing how some herbicides cause local irritation plus systemic effects when exposure is significant. 2,4-D is a common phenoxy herbicide that can irritate the skin and mucous membranes on contact. If it is ingested or absorbed through the skin, it can lead to vomiting, headaches, diarrhea, and confusion as it affects the body more broadly. The severity can depend on the product form, with ester formulations absorbed more quickly through the skin than salts, so protective clothing and prompt washing after handling are important safeguards. The other herbicides listed have different typical hazard profiles, so the described combination of skin/mucous irritation with these specific symptoms points to 2,4-D as the best match.