The regulation of oil and energy in texas is performed by

Railroad commission of taxes and taxes commission on environmental quality.

Explanation:

Railroad commission established in 1891, to regulate the industry since the 1800s.  Making it the oldest existing agency, until the presence of oil in Corsicana region in late 1800 and Spindletop in 1901. the legislation designed oil pipes as oil carrier. Bu 1919, that the oil and gas division was created at the state agency level.  During the 1990s the texas legislature moved to make natural resource projection more efficient by putting in effect various programs as by 1993 as a comprehensive environmental protection agency for texas. (TCEQ) Texas environmental commission for quality assurance was named so to oversea projects that lead to quality assurance and proper utility of oil resources and range of other environmental management.

Don’t use up to much of them it leads to pollution

I'm pretty sure it's c. extremely gradual but not 100% sure though.