Choose the sentence which is grammatically incorrect:

The correct answer is Option (1) → My new jeans is too tight around the waist.

Subject-verb agreement with words like “jeans”:

• The given sentence says “My new jeans is”.
• “Jeans” names one thing made of two parts, like “trousers” and “scissors”. Such words always take a plural verb.
• Corrected: My new jeans are too tight around the waist.

Why the Other Options are Incorrect?

Option 2: The committee has announced its decision about the new bus fees. This sentence is correct. “The committee” acts as one group here (“its decision”), so it takes the singular verb “has”.

Option 3: Many a farmer in our district has lost his crop to the floods this year. This sentence is correct. “Many a” is followed by a singular noun, “farmer”, so it takes the singular verb “has”.

Option 4: Each boy and girl in the colony was given a kite on Makar Sankranti. This sentence is correct. “Each” before nouns joined by “and” takes a singular verb, so “was” is right.