Question

order the topics from broadest to narrowest.
broaderthe effect of chinas economy on the 2015 decline in oil pricesthe effect of chinas economy on oil pricesfactors affecting the fluctuation of oil prices

Explanation:

1. The broadest topic covers all general factors influencing oil price changes, with no narrow focus.
2. The next narrows to only China's economic impact on oil prices, without a time limit.
3. The narrowest topic specifies both China's economy and the 2015 oil price decline, the most limited scope.

Answer:

1. factors affecting the fluctuation of oil prices
2. the effect of China's economy on oil prices
3. the effect of China's economy on the 2015 decline in oil prices