An environmental scientist wants to estimate the plant species population density across a clearing without introducing bias. Which sampling approach is most appropriate?

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A Systematic sampling along a single predetermined transect line.
B Placing quadrats at coordinates chosen by a random number generator.
C Sampling exclusively from areas with thickest vegetation.
D Conducting a single extensive pilot study over one square meter.

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Answer: B. Placing quadrats at coordinates chosen by a random number generator.

Answer Explanation: B. Random sampling using a random coordinate grid or random number generator ensures every segment of the study area has an equal chance of being selected, eliminating human selection bias.

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An environmental scientist wants to estimate the plant species population density across a clearing without introducing bias. Which sampling approach is most appropriate?

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