The following text discusses renewable energy.
Wind power has become one of the fastest-growing sources of electricity worldwide. Modern wind turbines can generate enough power for thousands of homes, and advances in technology have made wind energy increasingly cost-competitive with fossil fuels. However, wind power faces challenges including intermittency—wind doesn't blow consistently—and concerns about effects on birds and scenic landscapes. Researchers are working to address these issues through better turbine designs and smarter grid management.
What is the main idea of the text?
Wind power is growing rapidly but still faces some challenges
Fossil fuels remain more reliable than wind energy
Wind turbines are harmful to all wildlife
Wind power will soon replace all other energy sources
Correct Answer: A
Choice A is the correct answer. The text presents growth and benefits (fastest-growing, cost-competitive) alongside challenges (intermittency, birds, landscapes) and ongoing solutions.
- Evidence: Describes rapid growth and specific challenges.
- Reasoning: Both positive development and ongoing issues are presented.
- Conclusion: Growing but challenged describes the current state.
Choice B is incorrect because wind is described as "cost-competitive" with fossil fuels. Choice C is incorrect because the text mentions concerns, not proven harm to all wildlife. Choice D is incorrect because such replacement is not predicted.