Passage Summary: Workers in Department F get a certain 'stress' illness much more often than people in other parts of the company. Because of this, the author concludes that the work in Department F is just more stressful.

Conclusion: The specific tasks performed in Department F are more stressful than the tasks in other departments.

Reasoning: There is a significantly higher rate of a stress-related syndrome among workers in Department F compared to any other department in the company.

Analysis: The argument jumps from a correlation (more illness in Dept F) to a causal conclusion (the work in Dept F causes more stress). To strengthen this, we need to eliminate alternative explanations for why those workers are more stressed. For example, if workers aren't simply transferring into Department F *because* they are already stressed, or if there isn't some non-work factor (like a localized environmental toxin) causing the syndrome, the argument's conclusion becomes much more likely. Look for an answer that rules out these 'outside' variables.