A researcher would like to study the amount of mercury in trout that live in different water conditions. How could theresearcher divide the population of trout before taking a sample from each population for more accurate results?-river trout, stream trout: lake trout, ocean trout-all trout east of the Mississippi: all trout west of the Mississippi-trout larger than three inches trout smaller than three inches-trout with suspected mercury, trout without suspected mercury
