can define the product/objective.
It could be limited by changing the conditions e.g.) temperature, because most bacteria grows the fastest at warm temperatures. so by making the conditions extremely cold or extremely hot, it will limit how much bacteria can grow. however, bacteria can still infinitely grow, and limiting it only means it is growing less or slower.
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Answer:
B is most probably the right answer since it has the both hydrophollic and characteristics.
Not 100% sure though
