Passage Summary: Researchers noticed that people take more time to pull out of a parking space if they see someone else waiting for it, which they interpret as people being territorial.

Conclusion: Drivers feel a sense of ownership over their parking spots, and this feeling intensifies when they realize someone else wants the space.

Reasoning: Data shows that drivers take longer to vacate a spot when another car is waiting, and even longer if the waiting driver honks.

Analysis: The argument assumes that the delay in leaving is caused by a psychological state of 'possessiveness.' To weaken this, we need to find an alternative explanation for why a driver might take longer when someone is watching. Perhaps the presence of a waiting car makes drivers feel rushed and therefore more prone to making mistakes, or perhaps they are simply being more cautious to avoid a collision. Look for an answer that provides a reason for the delay that has nothing to do with being territorial or spiteful toward the other driver.