In the following English grammar question, read the labelled sentence I recall you telling me (A) / the story of the seven witches (B) / but I cannot remember where or when. (C) / No Error (D) and identify which part contains an error, or mark No Error if the entire sentence is correct.

Introduction / Context:
This question tests your ability to recognise when a sentence is already correct and does not need any grammatical change. Many error spotting items include some sentences that are error free to make sure candidates do not mechanically search for mistakes where none exist. The sentence here expresses a memory: the speaker remembers being told a story about the seven witches but cannot recall the exact place or time. Your job is to decide whether any part (A), (B), or (C) is incorrect in terms of grammar or usage, or whether the sentence is fully correct, in which case you must select No Error (D).

Given Data / Assumptions:

• Part (A): I recall you telling me
• Part (B): the story of the seven witches
• Part (C): but I cannot remember where or when.
• Part (D): No Error.
• The intended meaning is that the speaker remembers the telling of the story, but not the details of place or time.

Concept / Approach:
The construction I recall you telling me is grammatically valid in English; recall can take a noun phrase or a gerund phrase as its object, and you telling me functions as a gerund phrase describing an action that happened in the past. The noun phrase the story of the seven witches is also correct and clearly identifies what was told. The conjunction but correctly joins two related clauses: I recall you telling me the story and I cannot remember where or when. The negative form cannot remember is standard, and the pair where or when succinctly covers both location and time without needing extra words. Therefore, there is no grammatical or idiomatic error in any of the labelled parts, and the correct response is that the sentence is error free.

Step-by-Step Solution:

Verification / Alternative check:
To verify, you can attempt to rewrite the sentence in different ways and see whether any change is actually necessary. For example, you could say I remember you telling me the story of the seven witches, but I cannot remember where or when. This alternative uses remember instead of recall, but both verbs are correct. You may also transform you telling me into your telling me without changing the sense. None of these alternatives are improvements forced by an error; they are merely stylistic variations. Because the original structure is already grammatically sound and idiomatic, marking any specific part as wrong would be unjustified.

Why Other Options Are Wrong:
Option A is not wrong, as recall you telling me is accepted English. Option B is not wrong; the phrase the story of the seven witches correctly uses a definite article and a prepositional phrase indicating what the story is about. Option C is also correct; the conjunction but, the auxiliary cannot, and the pair where or when are all properly used. Therefore, choosing A, B, or C as containing the error would be incorrect. The only accurate choice is option D, which acknowledges that no error exists in the sentence.

Common Pitfalls:
Many students fall into the trap of believing that every error spotting question must contain a mistake, which leads them to manufacture errors by over analysing correct structures. Some may incorrectly assume that recall must always be followed by a that clause or a simple noun, and therefore doubt you telling me. Others may fixate on the phrase where or when, trying to add extra words like it happened, even though the original wording is concise and natural. To avoid such pitfalls, remember that No Error is sometimes the right answer and trust your knowledge when a sentence reads smoothly and follows the rules you have learned.

Final Answer:
The sentence is grammatically correct as written, so the correct choice is D (No Error).