Sally Is Interested in Studying the Effects of Maternal Exposure

Multiple Choice

Sally is interested in studying the effects of maternal exposure to pollution on infant health. She would like to examine whether exposure to air pollution during pregnancy is linked to an increase in infant health problems. Which is the best option for the study design that should Sally use, and why?

A) Sally should use an experimental design because it will allow her to make causal claims about pollution and infant health.
B) Sally should use an experimental design because it is a more rigorous method than a nonexperimental design.
C) Sally should use a nonexperimental design because it is unethical to use an experimental design in this case.
D) Sally should use a nonexperimental design because it is less artificial than an experimental design in this case.