A sampling plan collects only one brief area sample while the highest-exposure task occurs at another time. What is the main limitation?
- AAny single area sample represents every worker for the whole day.
- It may not represent the workers’ exposure during that task.
- CA contractor license guarantees the sample is representative.
- DExactly three samples always resolve every exposure question.
Where to look it up
https://www.osha.gov/otm/section-2-health-hazards/chapter-1
Why B is correct
Sampling location, duration and task timing matter. OSHA guidance distinguishes strategies for exposure assessment; a fixed count alone cannot guarantee adequate representation.