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1 points Save Answer Aresearcher randomly surveys 200 individuals, She asks those surveyed for their age and their favorite type of hot beverage. She finds that coffee is the most popular hot beverage among individuals ages 21 - 49 and tea is most popular hot beverage among individuals ages 50 and over. Can the researcher conclude that being 50 or older causes you to prefer tea? a. Yes, causal relationships can be determined when randomly sampling. No, the researcher did not obtain a large enough sample. Yes, the data were collected using a well-designed experiment. O d. No, the data were collected using an observational study