11. Which of the following statements best summarises the main idea of this paragraph?

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Question: 11. Which of the following statements best summarises the main idea of this paragraph?

Option a: 'Hydrogen is eco-friendly but has high costs and safety risks.' This statement touches on two points often discussed about hydrogen. However, saying there are safety risks as a main idea without acknowledging the overarching balance between benefits and challenges would be incomplete. The main idea typically includes both the clean aspect and the practical barriers, not just costs and safety.

Option b: 'Hydrogen is not viable for energy use due to its flammability and costs.' This asserts that hydrogen is not viable at all, which is stronger than what many discussions claim. While flammability and cost are concerns, the typical main idea recognizes hydrogen as useful but with notable challenges, rather than declaring it non-viable.

Option c: 'Hydrogen is clean and useful, but has production and infrastructure challenges.' This captures the balanced view: hydrogen offers environmental benefits and utility, yet faces hurdles in production scale and infrastructure readiness. This aligns with the nuanced main idea often conveyed in passages about hydrogen.

Option d: 'Hydrogen can be produced with renewables but needs better distribution infrastructure.' This focuses on a specific production source (renewables) and infrastructure, but it may omit other important points such as overall cleanliness and the existence of broad challenges beyond distribution. It narrows the scope compared with the broader main idea that encompasses multiple challenges and the general usefulness.

In summary, each incorrect option emphasizes a narrower or more extreme claim, whereas the correct option presents the balanced, overarching take: hydrogen is clean and useful but faces significant production and infrastructure challenges. The main idea is not that hydrogen is flawless or entirely unviable, but that its benefits come with notable practical barriers.

11. Which of the following statements best summarises the main idea of this paragraph?

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