Researchers would like to assess the overall health of white pine trees in a state park. Which of the following methods for choosing the trees to assess would be considered a convenience sample?

A convenience sample uses individuals that are easiest to reach or assess. The 100 trees closest to the ranger station are convenient to access, so choice B is a convenience sample. The random selections in C and D use chance rather than ease of access, while A assesses every tree in the park.

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