Is the study is an observational study or controlled experiment or anecdote. (Do not use capital letters) a. A student watched picnickers with a large cooler of soft drinks to see whether teenagers were less likely than adults to choose diet soft drinks over regular soft drinks b. Patients with Alzheimer's are randomly divided into 2 groups. One group is given a new drug, other a placebo. c. The local public school does not require students to wear uniforms. The principal compares the GPA of students who wear uniform with GPA of those who don't to determine if students wearing uniform have higher GPAs. d. According to Los Angeles Times, a regular drinker of peanut milk says that the beverage caused his cancer to go into remission
