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A study is under way in Yosemite National Forest to determine the adult height of American pine trees.
Specifically, the study is attempting to determine what factors aid a tree in reaching heights greater than 60 feet
tall. It is estimated that the forest contains 25,000 adult American pines. The study involves collecting heights
from 250 randomly selected adult American pine trees and analyzing the results. Identify the sample in the
study.
A. The 250 randomly selected adult American pine trees.
B. The 25,000 adult American pine trees in the forest.
C. All the adult American pine trees taller than 60 feet.
D. All American pine trees, of any age, in the forest.
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