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What is a dedicated vent system?

  1. A vent for multiple appliances

  2. A vent shared with other systems

  3. A vent that requires no maintenance

  4. The only vent for an appliance

The correct answer is: The only vent for an appliance

A dedicated vent system is a specific type of vent that is solely used for one appliance. This means that it is not shared with other systems or appliances, as in option B. It also does not require maintenance, as in option C, since it is only used for one appliance and therefore does not get clogged or overloaded with multiple appliances. Option A, a vent for multiple appliances, is incorrect because a dedicated vent system is not shared with other appliances. Thus, option D is the correct answer as it accurately describes what a dedicated vent system is.