Many bird species populate a forest. Researchers
conducting a study need to estimate the number of each
species that live in the forest. They divide the forest into
equal sections and then record the species of the first 25
birds they see in each section.
What is the sample in this study?
OA. All the birds in the forest
B. The species with the greatest number
OC. The first 25 birds in each section of the forest
D. The species native to the area that contains the forest