Natural gas drilling locations are determined by

The correct answer is:

b. seismic surveys

When it comes to natural gas drilling and identifying proper locations, researchers and experts determine the right places through the process of seismic surveys. This process allows them to identify areas that would potentially hold large reserves of gas and oil at a more effective and efficient rate.

Explanation:

Seismic surveys use surface-induced seismic beats to image subsurface structures. Basically, a seismic wave is created beneath the earth's surface and then marked up by sensors called "geophones" as the waves bounce off subsurface formations -- that is, layers of rock underneath the surface.

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