" (often appearing alongside or titled ) explores the transition of communities and cities toward 100% renewable energy sources. It highlights success stories like Three Rivers in Oregon and the evolution of fuel cell technology. Answer Guide for Common Questions

Answer: B – High costs compared to fossil fuels.

Below is a deep review of the reading passage, the typical question sets associated with it, and an analysis of the difficulty and skills required to answer them correctly.

The passage often states it will be designed to attract tourists or be "tourist-friendly".

Statement: "The initial motivation for developing renewable energy was primarily environmental." Text Reference: "The oil shocks of the 1970s drove the initial search for alternatives..." Logic: The text suggests economic/security motivations (oil shocks) were the driver, not just the environment. Answer: False .

(also known as "Renewable Energy: Progress and Insights") focuses on the race to make alternative energy competitive with fossil fuels.