Read each sentence to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. If there is no error, the answer is “No error”. (Ignore punctuation errors, if any.) The coverage of schemes remain / patchy because of rampant / leakages, and poor execution / and monitoring. / No error

Introduction / Context:
This error-spotting question tests your understanding of subject-verb agreement in English. The sentence talks about “the coverage of schemes” and describes it as patchy due to leakages, poor execution and monitoring problems. The main issue is whether the singular subject “coverage” agrees with the verb that follows.

Given Data / Assumptions:

• Part A: “The coverage of schemes remain”
• Part B: “patchy because of rampant”
• Part C: “leakages, and poor execution”
• Part D: “and monitoring”
• Part E: “No error”
• The intended correct sentence is: “The coverage of schemes remains patchy because of rampant leakages, and poor execution and monitoring.”

Concept / Approach:
In English, the verb must agree with the true subject in number (singular or plural). Here, the subject is not “schemes” but “coverage”. The phrase “of schemes” is a prepositional phrase modifying “coverage”. Since “coverage” is singular, the verb must also be singular: “remains”, not “remain”. Many error-spotting questions are designed precisely to test whether you can look past the plural noun inside a prepositional phrase and match the verb to the main noun instead.

Step-by-Step Solution:
Identify the subject: “coverage” is the head noun; “of schemes” only tells you “coverage of what”.Decide on number: “coverage” is singular, so it needs a singular verb.Check the verb used: “remain” is plural and does not agree with the singular subject.The verb should be “remains”: “The coverage of schemes remains…”Parts B, C, and D – “patchy because of rampant leakages, and poor execution and monitoring” – are all grammatically acceptable phrases describing the reason for the patchy coverage.Therefore, the grammatical error lies in Part A.

Verification / Alternative check:
Rewrite the sentence in a simpler form: “The coverage remains patchy.” Clearly, “coverage” (singular) pairs with “remains”. Adding the prepositional phrase “of schemes” should not change the verb form: “The coverage of schemes remains patchy.” If we changed the subject to plural, for example, “The schemes remain patchy”, then “remain” would be correct, but that is not the structure here.

Why Other Options Are Wrong:
Part B (“patchy because of rampant”) correctly introduces the reason. Part C (“leakages, and poor execution”) is grammatically fine, listing two causes. Part D (“and monitoring”) simply extends the list. None of these parts break any grammar rules; they only add details to the core idea that coverage is patchy. The only mismatch is between “coverage” and “remain” in Part A, so that is the correct error location.

Common Pitfalls:
A common error is to let the nearer noun “schemes” control the verb instead of the true subject “coverage”. This is known as a proximity error. Competitive exams regularly test this by inserting prepositional phrases between the subject and the verb. To avoid this trap, always strip away prepositional phrases (“of X”, “in Y”) and check agreement between the main noun and the verb first.

Final Answer:
The error is in part “The coverage of schemes remain”; it should be “The coverage of schemes remains”.