Question ID:PT87 S3 Q17 Passage:After monitoring blood levels of lycopene (a nutrient found in some fruits and vegetables) in 1,000 middle-aged study participants over a 12-year period, researchers found that participants with low levels of lycopene were more than twice as likely as those with high levels to have a stroke during that period. Clearly, lycopene reduces the risk of stroke. Stem:Which one of the following, if true, most weakens the argument? Correct Answer Choice:AChoice A:Most fruits and vegetables that are rich in lycopene also contain high levels of several other nutrients that are thought likely to reduce the risk of stroke. Choice B:Countries in which people consume substantial quantities of lycopene-rich fruits and vegetables generally have lower rates of stroke than other countries. Choice C:Middle-aged people typically have lower lycopene levels than young adults. Choice D:Study participants with high levels of lycopene consumed, on average, twice the quantity of fruits and vegetables as those with low levels of lycopene. Choice E:There was wide variation in lycopene levels among study participants.