Passage Summary: The U.S. is less safe for workers than Sweden or Canada. All three countries use special safety committees to prevent accidents, but Sweden and Canada require them by law while the U.S. mostly leaves it up to individual companies.

Reasoning: Sweden and Canada have better workplace safety rankings than the United States, and while all three use joint labor-management committees to reduce injuries, these committees are legally mandated in Sweden and Canada but only voluntary and rare in the U.S.

Analysis: Since this is a Most Strongly Supported question, we need to find a bridge between the provided facts. The stimulus establishes a correlation: countries with mandatory safety committees have better safety records than a country where such committees are rare and voluntary. You should look for an answer choice that suggests the legal requirement of these committees is a significant factor in the safety disparity between these nations. Avoid any choices that make overly broad claims about other factors not mentioned in the text.