Final answer:
To ensure safety when gas from the stove has filled the kitchen, immediately open all windows to ventilate the area and then call emergency services and evacuate. It's crucial to ventilate well and have carbon monoxide detectors at home for early detection of gas presence.
Step-by-step explanation:
If you have forgotten to turn off your gas stove and the gas is enveloping your enclosed kitchen, immediate actions are required for safety. Since gas accumulation can be very dangerous, it's important to ventilate the area as quickly as possible.
Therefore, option a) Immediately open all windows to ventilate the area is the correct initial response. It is also wise to follow the manufacturers' instructions when dealing with gas appliances and always work in a well-ventilated room. After ventilating the area, d) Call emergency services and evacuate the premises is the next best step to ensure that professionals can handle the situation safely.
Ventilating helps to reduce indoor pollutants and potential hazards. It is also important to have carbon monoxide detectors installed in your home to alert you of such dangers before they become critical.