Natural gas can be stored or shipped in what two forms?

Natural gas can indeed be stored or shipped primarily in two specific forms: compressed natural gas (CNG) and liquefied natural gas (LNG).

Compressed natural gas (CNG) involves storing natural gas under pressure, which reduces its volume and makes it easier to transport. This method is often used for vehicles and can be effective for storage over shorter distances.

Liquefied natural gas (LNG), on the other hand, is achieved by cooling natural gas to extremely low temperatures, around -162 degrees Celsius (-260 degrees Fahrenheit), which converts it into a liquid state. This significantly reduces its volume, allowing for more efficient transportation over long distances, particularly via ships.

By recognizing both of these forms—compressed and liquefied—this choice correctly reflects the accepted methods for storing and transporting natural gas in practical applications. The other forms mentioned in the incorrect choices do not suitably represent the conventional methods utilized in the industry for natural gas.