Explanation:

- The World Economic Forum's Global Energy Transition Index assesses how well countries are transitioning to sustainable energy systems.

- Option 1: China - A leading global energy consumer and producer focusing on clean energy investments, but often challenges arise due to its extensive coal usage.

- Option 2: Switzerland - Known for its environmental policies and high energy efficiency but not currently at the top.

- Option 3: Sweden - Consistently ranks high in sustainability efforts and energy transition, leveraging renewable energy extensively. Correct Answer

- Option 4: India - While making significant strides in renewable energy, it still faces challenges compared to the highest-ranking countries.

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