Multiple Choice
A researcher is interested in knowing if exposure to certain chemicals has an effect on mental acuity in old age. He compares the mental acuity of a group of elderly people who were exposed to the chemicals and another group who were not. The study would be an example of what kind of research?
A) an experiment
B) a quasi-experiment
C) a cross-sectional study
D) a longitudinal study
E) a case study
Correct Answer:
Verified
Correct Answer:
Verified
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