order the topics from broadest to narrowest. broader the effect of chinas economy on oil prices the effect…

Brief Explanations:

The topic "factors affecting the fluctuation of oil prices" is the broadest as it encompasses all possible influencing factors. "The effect of China's economy on oil prices" is more specific as it focuses on one particular factor (China's economy). "The effect of China's economy on the 2015 decline in oil prices" is the narrowest as it zero - in on a specific time (2015 decline) within the context of China's economy's impact on oil prices.

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