Passage Summary: Researchers found that people who snore a lot have damaged throat muscles, while non-snorers don't. They concluded that the snoring itself is what's causing the damage.

Conclusion: The act of snoring is the direct cause of throat muscle damage in frequent snorers.

Reasoning: Patients who snore frequently show significantly more throat muscle abnormalities in biopsies than those who do not snore.

Analysis: This argument suffers from a classic correlation-to-causation flaw. Just because snoring and muscle damage happen together doesn't mean the snoring came first; perhaps the muscle damage is what causes the snoring in the first place. To strengthen this, we need to bolster the claim that snoring is the cause and not the effect. Look for an answer that shows the damage wasn't there before the snoring started or rules out a third factor that causes both.