Which if the following best summarizes the debate about fracking? A. Scientists do not know enough about fracking to draw a conclusion about the risks of this technology

B. People who live close to fracking sites and some scientists argue that fracking may be harmful to humans and the environment. Drilling companies and some scientists argue that fracking is an important source of clean energy and has not been scientifcally shown to be harmful.

C. Mark Marham, a resident of Colorado, and Josh Fox, the director of Gasland, have been trying to convince the government to abolish drilling companies.

D. President Obama and the Environmental Protection Agency (EPA) published a report that led to the de- regulation of drilling companies.