Answer:I think it is part B
Explanation:
B. Soil Contamination
All the other answers are talking about clean and pure things while this answer is the only negative one. So B is your answer.
All of the above. Good luck with the bio
<span>The nurse would need to consult the beers criteria prior to giving medications to patients who fall in the category of elderly. This list would notify the nurse what medications are considered inappropriate. Incidentally, the list of patients not covered by this list include newborns, toddlers, and teenagers.</span>
B. Formal operational stage of cognitive development