Statement C is the only wrong statement because noise control is not limited to personal protective devices; it also includes engineering controls, planning measures and legal regulations. Statements A, B and D are correct: A highlights health effects, B recognises noise as environmental pollution and D lists valid control strategies. Therefore, the combination that identifies C only as wrong is the correct answer.
Option A:
Option A is correct since it accurately singles out C as the wrong statement and leaves A, B and D recognised as true. It reflects the comprehensive approach to noise management that extends beyond individual protection. Thus it matches the requirement of selecting the wrong statement(s).
Option B:
Option B is incorrect because it treats both A and C as wrong. Statement A correctly describes adverse health impacts of chronic noise exposure, such as hearing loss and stress-related problems. Including a correct statement in the wrong set makes this option invalid.
Option C:
Option C is incorrect as it groups C and D together as wrong statements. While C is indeed wrong, D is correct in giving examples of zoning, silencers and time restrictions that are widely used in noise regulation. This mixture of one true and one false statement cannot be accepted.
Option D:
Option D is incorrect because it sees B and C as wrong. B is a correct statement since noise is widely recognised as environmental pollution affecting well-being. Treating B as wrong undermines standard environmental health knowledge.
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