Which of the following is a potential carbon monoxide source in a home?

The correct response identifies a gas furnace as a potential source of carbon monoxide in a home. Gas furnaces burn natural gas, propane, or other fuels as part of their heating process. In a properly functioning system, the combustion gases are vented outside. However, issues such as poor venting, malfunctioning appliances, or blockages can lead to the accumulation of carbon monoxide, a dangerous byproduct of combustion, within the home.

Understanding potential carbon monoxide sources is crucial for safety. While gas fireplaces and wood-burning stoves can also produce carbon monoxide, the question specifically aims at identifying a primary source typically associated with whole-home heating systems. Electric stoves, on the other hand, do not produce carbon monoxide since they use electricity rather than combustion for heat, thereby eliminating that particular risk.