Read each 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 corresponding letter of that part is the answer. If the given sentence is correct as it is, then choose option ‘No error’ as your answer response. (Ignore errors of punctuation, if any).

The latest batch of applications have (A)/ been reviewed, and (B)/ the acceptance letters (C)/ are ready to be sent out. (D)

Correct option is A

Part (A) contains an error. The subject "The latest batch" is singular, so the verb should be "has" instead of "have" to maintain subject-verb agreement.
The correct sentence should be: "The latest batch of applications has been reviewed, and the acceptance letters are ready to be sent out."
Rule: Ensure subject-verb agreement by matching singular subjects with singular verbs and plural subjects with plural verbs. Here, "batch" is singular and should be paired with "has."