Q: Where does most natural gas come from?


Read this paragraph and choose the correct option from the provided answers:

Most natural gas comes from the wells that produce petroleum. An increasing amount comes from a new method. Hydraulic fracturing, called fracking , is very much in the news lately. Fracking makes it easier and quicker to get natural gas from the rock ( Figure below ).

 Choices:

- recycled cooking oil

- oceans

- alchemy

- wells that produce petroleum


A:
wells that produce petroleum