题目内容：
According to the first paragraph of the passage, the author considers which of the following to be most helpful in determining the value of special protective labor legislation for women?
A．A comparative study of patterns of work-related illnesses in states that had such laws and in states that did no B．An estimate of how many women workers are in favor of such law
C．An analysis of the cost to employers of complying with such law
D．An examination of the actual effects that such laws have had in the past on women worker
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答案解析：