Read the sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The letter of that part is the answer. If the given sentence is grammatically and contextually correct, then choose option “No error” as your answer response. (Ignore errors of punctuation, if any).

Industrial waste and (A)/ sewage has heavily polluted (B)/ the Ganga, endangering (C)/ aquatic life and human health. (D)

Correct option is B

Correct answer: (b) B
Explanation:
The error lies in part B, where "sewage has heavily polluted" is incorrect.
Grammatical Rule Applied:
· The subject "Industrial waste and sewage" is a compound subject joined by "and," which makes it plural.
· A plural subject requires a plural verb, but "has" is singular.
· The correct verb should be "have" instead of "has" to agree with the plural subject.
Corrected Sentence:
"Industrial waste and sewage have heavily polluted the Ganga, endangering aquatic life and human health."