alert residents to the possibility of fire. warn residents when a dangerous gas is present. tell people that it is time to check the smoke detector. advise people of an increase in temperature in the home.
A carbon monoxide detector is used in homes to

Options:
- alert residents to the possibility of fire.
- warn residents when a dangerous gas is present.
- tell people that it is time to check the smoke detector.
- advise people of an increase in temperature in the home.

warn residents when a dangerous gas is present.