The rate of illness among individuals who live along the coast of the Gulf of Mexico was compared with that of the general population of a state. This type of experimental design is called a(n) O A. clinical trial B. geographical cohort study O c. C. age cohort study O D. in vitro observation​

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Explanation:

The correct option is B.

Explanation:

A cohort study can be used in medicine to draw comparisons between a group with similar characteristics and a much larger group where the initial group is drawn from. The basis of comparison usually defines the type of cohort study been discussed. The question compared individuals from a location as against those from a larger surrounding, thus this type of cohort study can be referred to as a geographical cohort study.

NOTE: It isn't a clinical trial as none of the two compared groups was given any form of treatment or dose.

Geographical cohort study

Explanation:

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