Which property of Natural Gas makes it suitable for residential heating?

Natural gas is well-suited for residential heating due to several of its properties, which makes it an effective and efficient energy source. One significant aspect is that it has a low ignition temperature. This allows natural gas to ignite easily, ensuring quick heating when the gas burns in heating applications.

Additionally, natural gas exhibits a high flame speed, which aids in its efficiency during combustion. A higher flame speed allows natural gas to heat air more quickly and evenly, providing effective residential heating.

Finally, the efficient combustion of natural gas further enhances its suitability. When burnt, natural gas produces a high amount of heat with fewer emissions compared to other fossil fuels. This translates into lower operating costs for homeowners, as well as reduced environmental impact.

The combination of these characteristics—low ignition temperature, high flame speed, and efficient combustion—makes natural gas an excellent choice for residential heating, justifying the selection of all of these properties. Each contributes in its way to the effectiveness of natural gas in residential applications, thereby affirming the correctness of the answer.