Passage Summary: Rice prices are way up. Experts say it's because governments keep most of the rice for their own people, so when production drops even a little, there's almost nothing left for the rest of the world to buy, causing prices to skyrocket.

Conclusion: The spike in global rice prices is primarily due to the fact that most rice is controlled by governments for local use, leaving very little for international trade.

Reasoning: Because only a tiny fraction of rice is traded freely, the global market is extremely sensitive to even minor fluctuations in production.

Analysis: The analysts are offering a specific causal explanation: the *market structure* (low trade volume) is why prices reacted so violently to a production drop. To weaken this, look for an answer that suggests the price increase was caused by something else entirely, or that the market structure isn't as restrictive as they claim. For instance, if the production decrease was actually massive rather than 'slight,' the analysts' emphasis on the 'small percentage' of trade might be irrelevant. Alternatively, if governments actually released their stockpiles onto the world market, the analysts' premise would be undermined.