Final answer:
To help the windshield remain clear of fog and guard against carbon monoxide buildup, make sure vents and chimneys are working properly and never burn charcoal indoors. Install carbon monoxide detectors in the home.
Step-by-step explanation:
One way to help the windshield remain clear of fog and guard against possible carbon monoxide buildup is to make sure that vents and chimneys are working properly and to never burn charcoal indoors. This ensures proper ventilation and prevents the accumulation of carbon monoxide indoors. Additionally, placing carbon monoxide detectors in the home can provide an early warning in case of any carbon monoxide leaks, helping to prevent any health risks associated with carbon monoxide exposure.