How is LP gas typically delivered to consumers?

LP gas is typically delivered to consumers through bulk delivery by truck or through an individual cylinder exchange system. This method is efficient and allows suppliers to transport large volumes of LP gas directly to retail locations or residential consumers. Bulk delivery involves filling a storage tank at a customer's location, ensuring that they have a reliable supply of gas for heating, cooking, or other uses.

Additionally, the cylinder exchange option is convenient for consumers who may not have the capacity for large storage tanks. With this system, empty cylinders can be exchanged for pre-filled ones, making it easier for customers to access LP gas without the need for transport or storage at their premises.

The other options, such as delivery by mail, rail, or air, are not practical methods for transporting LP gas due to safety concerns and logistical challenges associated with handling pressurized gas in those modes of transportation. Therefore, the combination of bulk delivery and individual cylinder exchange is recognized as the standard practice for delivering LP gas to consumers.