Option 1 -> Incorrectly matches Tamarind with Oxalic acid and Tomato with Methanoic acid.
Option 2 -> Incorrectly matches Tamarind with Methanoic acid.
Option 3 -> Correctly matches: Tamarind with Tartaric acid, Tomato with Oxalic acid, Ant sting with Methanoic acid (formic acid), and Lemon with Citric acid.
Option 4 -> Incorrectly matches Tamarind with Citric acid and Lemon with Methanoic acid.
Hence, Option 3: (A) - (IV), (B) - (I), (C) - (II), (D) - (III) -> Tamarind is known for its tartaric acid content which gives it a sour taste, tomatoes contain oxalic acid, ant stings inject methanoic acid (also called formic acid) which causes the burning sensation, and lemons are rich in citric acid which is responsible for their characteristic sourness -> correct