In the question below, four sentences have been given. Out of four sentences, one sentence is error-free. Find out which of the following sentence is error-free. If all the given sentences have errors, then choose option ‘None is correct’ as the answer choice.

Correct option is C

· Sentence (a): ❌ Incorrect preposition + subject-verb agreement error.
·    Error 1: "Despite of" is incorrect. "Despite" is used without "of".
·    Correct usage: "Despite she earning..." should be "Despite her earning..."
·    Error 2: "expenses exceeds" → plural subject "expenses" requires plural verb "exceed".
·    Corrected: "Despite her earning from two jobs simultaneously, the monthly expenses exceed her calculated budget every single time."
· Sentence (b): ❌ Relative pronoun usage + subject-verb agreement error.
·    Error 1: "whom upbringing" → incorrect. "Whose upbringing" is the correct possessive form.
·    Error 2: "have been showing" → singular subject "child" needs "has been showing".
·    Corrected: "The child, whose upbringing lacked consistency and boundaries, has been showing signs of emotional dysregulation lately."
· Sentence (c): ✅ Correct sentence.
·   This sentence is grammatically correct with appropriate structure, punctuation, and parallelism:
·   "Though stringent, the central bank's policies spurred foreign investments, stabilizing the currency amid speculative volatility."
· Sentence (d): ❌ Wrong auxiliary verb + incorrect verb form.
·    Error 1: "Had the employees being treated..." → incorrect form; should be "Had the employees been treated..."
·    Error 2: "would not has witnessed" → incorrect; should be "would not have witnessed".
·    Corrected: "Had the employees been treated with more autonomy and respect, the company would not have witnessed such a high attrition rate."