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What is the minimum clearance required for a door in a commercial building?

  1. 750 mm

  2. 800 mm

  3. 850 mm

  4. 900 mm

The correct answer is: 850 mm

Commercial building codes typically require a minimum clearance of 850 mm or 33.5 inches for doorways to allow for wheelchair accessibility and ease of movement for individuals with disabilities. Option A (750 mm), B (800 mm), and D (900 mm) do not meet this minimum requirement and may not be in compliance with building codes. Therefore, C (850 mm) is the correct and most appropriate answer.