Study the following table: Fuel A: Calorific value High, State solid, Ignition temp. high Fuel B: Calorific value Moderate, State gas, Ignition temp. high Fuel C: Calorific value Moderate, State gas, Ignition temp. moderate Fuel D: Calorific value Low, State liquid, Ignition temp. low Which is best suited as domestic fuel?

A good domestic fuel should have a moderate to high calorific value, should be easy to handle (gaseous or liquid), and should have a moderate ignition temperature so that it is neither too difficult to ignite nor too dangerous. Fuel C has a moderate calorific value, is in gaseous state (easy to transport via pipelines or cylinders), and has a moderate ignition temperature, making it safe and practical. Fuel A is solid with high ignition temperature (hard to ignite). Fuel B has high ignition temperature making it inconvenient. Fuel D has low calorific value (inefficient) and low ignition temperature (unsafe). LPG, a common domestic fuel, fits the profile of C.