Hisayantanc2k and all,
I thought from the passage we are given that there are several tests for lead poisoning--a screening test is one of them.Every test could produce false positive or negative,but the screening test produce the least false negative.The conclusion is to strengthen that we should use the screening test over the other means to detect lead poisoning.
Option B just tells us that "all the screening tests" have the same proportion of false positive.Hence,it doesn't convince
...
I thought from the passage we are given that there are several tests for lead poisoning--a screening test is one of them.Every test could produce false positive or negative,but the screening test produce the least false negative.The conclusion is to strengthen that we should use the screening test over the other means to detect lead poisoning.
Option B just tells us that "all the screening tests" have the same proportion of false positive.Hence,it doesn't convince
...
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