Suppose you read a news report that a study was conducted where people who reported drinking green tea each day as part of their diet were less likely to be diagnosed with cancer over the 5 years in...

Suppose you read a news report that a study was conducted where people who reported drinking green tea each day as part of their diet were less likely to be diagnosed with cancer over the 5 years in which the study took place. Why can’t we conclude that drinking green tea makes one less likely to develop cancer? Describe two possible explanations for the results reported from the study.