Passage Summary: After a law was passed to regulate safety, fewer people got hurt in dangerous jobs, so the law must be the reason why.

Conclusion: The 1955 legislation is responsible for the improvement in safety within high-risk industries.

Reasoning: Serious injury rates dropped in high-risk sectors following the implementation of government safety controls.

Analysis: The author falls into the classic trap of assuming that because one thing happened after another, the first thing caused the second. To weaken this, we need to find an alternative explanation for the drop in injuries. Perhaps industrial technology became safer on its own, or the most dangerous factories simply closed down. Look for an answer that suggests the safety trend would have happened even without the new law.