"Countries that invest in renewable energy have stronger economies. Investing in renewables boosts economic growth." Which strengthens?

The correct answer to the question ""Countries that invest in renewable energy have stronger economies. Investing in renewables boosts economic growth." Which strengthens?" is Option B: Countries that recently shifted to renewables saw economic growth outpacing countries that did not, controlling for other factors.

The other options — A) Renewable energy companies employ many people, C) Oil prices are volatile, D) Many countries invest in renewables — are incorrect for this General Knowledge question. As explained above: A controlled comparison isolating the renewable investment variable strengthens the causal claim by ruling out confounding factors.