At the beginning of the semester, a researcher identifies two groups of college students in a mathematics class: a group who regularly drinks more than 5 alcoholic drinks at one time and a group who never drinks more than 5 alcoholic drinks at one time. She then measures their school performance on the final exam. What type of study is this?Case-control studyRandomized clinical trial-Cohort study

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Explanation:

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every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

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most cajuns resided in acadiana, where their descendants are still predominant