In the passive voice, the object (“this watch”) of the active sentence becomes the subject. The verb form changes from “need to wind” → “need to be wound” while keeping the same meaning.
You don’t need to wind this watch. (change the voice)
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Question context
This question is part of 🗣️ Verbal Ability within the broader 🧠 Aptitude Mastery subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.