Error spotting: identify the part with an error in "For a full week she enjoyed the benefits of being a big sister"

Introduction / Context:
This is an error spotting question where you have to decide whether any part of the given sentence contains a grammatical mistake. The sentence talks about someone enjoying the benefits of being a big sister for a full week. These questions test your overall sense of correct English structure, including prepositions, verb forms, and noun usage.

Given Data / Assumptions:

• Part A: "For a full week"
• Part B: "she enjoyed the benefits"
• Part C: "of being a big sister."
• Part D: "No error"
• The complete sentence is: "For a full week she enjoyed the benefits of being a big sister."

Concept / Approach:
To solve such a question, read the entire sentence and check whether it sounds natural and follows standard grammar rules. Look at tense consistency, subject verb agreement, correct prepositions, and whether the phrases fit together logically. If you cannot find any error in parts A, B, or C, then you should choose "No error", which corresponds to part D.

Step-by-Step Solution:
Step 1: Examine part A: "For a full week" correctly introduces a duration of time and is grammatically sound. Step 2: Examine part B: "she enjoyed the benefits" is in simple past tense and agrees with the subject "she". The phrase "enjoyed the benefits" is natural English. Step 3: Examine part C: "of being a big sister" correctly uses the preposition "of" after "benefits" and describes the state of being a big sister; there is no error in structure or meaning. Step 4: Combine all parts: "For a full week she enjoyed the benefits of being a big sister." The sentence is grammatically correct and expresses a clear idea. Step 5: Since there is no grammatical error in parts A, B, or C, the correct choice is "No error", which is represented by part D.

Verification / Alternative check:
You can test the sentence by paraphrasing it: "She enjoyed what it meant to be a big sister for an entire week." This paraphrase shows that the meaning is clear and the original version is well formed. There is no tense shift, no missing article, and no incorrect preposition. If you try to change any part, such as replacing "of being" with "to be", the original sentence still does not become more correct than it already is.

Why Other Options Are Wrong:
Option A: The phrase "For a full week" is a standard time expression and is correctly used. Option B: "She enjoyed the benefits" is correct, with proper verb form and object. Option C: "Of being a big sister" is a correct complement to "benefits", using the gerund "being" in a natural way.

Common Pitfalls:
Students sometimes assume that every error spotting question must contain an error and waste time trying to invent one. Examiners deliberately include sentences with no error to test whether candidates have the confidence to choose "No error". Another pitfall is over analysing correct structures like "benefits of being", which is a perfectly normal English phrase. Trust your sense of correct usage when nothing obviously wrong appears.

Final Answer:
There is no error in the sentence, so the correct option is D.