a researcher who investigates the proportion of individuals who have a disorder during a particular period of time like the past year is best described as studying the of the disorder. a. criteria b. prevalence c. incidence d. lifetime prevalence

I believe your answer would be B. prevalence.

Hope this helps,

♥A.W.E.S.W.A.N.♥

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jefferson hoped to establish trade with the native american people of the west and find a water route to the pacific. jefferson also was fascinated by the prospect of what could be learned about the geography of the west, the lives and languages of the native americans, the plants and animals, the soil, the rocks, the weather, and how they differed from those in the east.

answer; i do believe its (b) 12.5 years of age;