Why is wood chosen for some sieves used in sampling?
ATo avoid contamination
BTo make them heavier
CTo make them rust
DTo make them melt
Answer & Solution
Correct answer: A. To avoid contamination
1. Recall the idea: Wood avoids contamination of the sample, which matters in sampling.
2. The correct choice is: To avoid contamination.
3. The other options describe different methods or properties and do not fit this fact.
_Source: Wikipedia, Sieve_
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