Answer: It gave workers the right to form unions and bargain collectively
Explanation:
The law described in this passage benefits Americans by giving workers the right to form unions and bargain collectively.
From the passage, since the industrial changes has made life insecure, it is important for the employees to firm unions which will help them right for their rights and ensure that they're treated well.
Answer:
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Answer: The last option.
Explanation: The precautionary principle would be considered to be most strictly applied where the precautionary measure is most disproportionate to the given risk. In all but the last option, there are either measures taken in response to concrete problems, or the precautionary measures are actually relaxed. In the last option, though, there are merely “fears” that antibiotics and growth hormones could cause harm (no experimental evidence), but the school board still takes the strict precautionary measure of mandating that schools only serve organic milk.