Eighty Individuals Who Wished to Lose Weight Were Randomly Divided

Multiple Choice

Eighty individuals who wished to lose weight were randomly divided into two groups of 40. One group was given an exercise program to follow while the other group was given a special diet. After three months, the researcher compared mean weight losses in the two groups. What type of study is this?

A) Observational study
B) Repeated measures study
C) Matched pairs study
D) Randomized experiment