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Office workers are randomly divided into two groups. One group takes meditation breaks throughout the day;the other takes 10 -minute walks every 2 hours. After 1 month, each groups given a stress test to compare stress levels.

Choose the correct description of the study.
A.
The study is an observational study because the researchers control one variable to determine the effect on the response variable.
B.
The study is an experiment because the study examines individuals in a​ sample, but does not try to influence the variable of interest.
C.
The study is an observational study because the study examines individuals in a​ sample, but does not try to influence the variable of interest.
D.
The study is an experiment because the researchers control one variable to determine the effect on the response variable.

D. The study is an experiment because the researchers control one variable (the type of break) to determine the effect on the response variable (stress levels).

D. The study is an experiment because the researchers control one variable (the type of break taken - meditation or walking) to determine the effect on the response variable (stress levels). In an experiment, researchers actively manipulate the variables of interest to assess their impact on the outcome. In this case, the researchers are intentionally assigning individuals to different groups and prescribing specific breaks for each group, thereby controlling the type of break taken. This allows them to compare the stress levels between the two groups and determine if there is a causal relationship between the type of break and stress levels.

D. The study is an experiment because the researchers control one variable (meditation breaks vs. 10-minute walks) to determine the effect on the response variable (stress levels).