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Scientists in a Central American Country Are Studying Factors That

Question 22

Multiple Choice

Scientists in a Central American country are studying factors that may be associated with delayed physical growth among a group of low-income children.The children live in a region of the nation that has high levels of lead in drinking water.This study is an example of a(an) ____ study.


A) conventional
B) uncontrollable
C) introspective
D) epidemiological

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