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Final answer:The correct answer is a) Condensing Furnace. Condensing furnaces use a secondary heat exchanger to extract additional heat from exhaust gases, thereby improving overall efficiency by reducing heat loss.Explanation:The correct answer is a) Condensing Furnace. The question, "A Furnace Equipped With A Secondary Heat Exchanger?" pertains to how certain types of furnaces operate, particularly those that are designed to enhance energy efficiency. The correct answer is a) Condensing Furnace. Condensing furnaces are specifically designed to have a secondary heat exchanger, which allows them to extract heat from the exhaust gases that would otherwise be expelled into the atmosphere.This process is an example of how to improve the efficiency of heating systems by utilizing the heat that would typically be lost. This action leads to the condensation process that characterizes these systems, hence the name condensing furnace. Notably, this upgrade contributes to improved efficiency by ensuring that more heat is transferred into the home rather than being lost through the chimney or exhaust vent....