Final answer:
The first sentence highlights the drawbacks of natural gas as an energy source, specifically methane leakage during extraction and transportation. It contrasts with the cleaner but imperfect solution of wind energy, which has minor environmental impacts but offers sustainability and economic benefits. The correct option is B. Highlights drawbacks
Step-by-step explanation:
The first sentence in the excerpt is marked with a 'b' because it Highlights drawbacks. It addresses the challenges associated with the drilling and extraction of natural gas, specifically the leaking of methane, which is a significant greenhouse gas contributing to global warming.
This information contrasts with the generally favorable environmental image presented by natural gas companies, pointing out the issues that they often omit in their public messaging.
Regarding wind energy, while it is a cleaner alternative to fossil fuels, it is not without environmental impacts. These include disruption to landscapes and habitats and potential harm to birds and bats.
However, the benefits of wind energy are that it is a sustainable energy source and has a significantly lower environmental impact compared to traditional fossil fuels.
Wind turbines can provide economic benefits to rural landowners and reduce reliance on more ecologically damaging energy extraction methods. The correct option is B. Highlights drawbacks