Final answer:
B. Hypertonicity. Hypotonic environments can lead to cell lysis if not monitored, while hypertonic environments can cause cell shrinkage but not direct lysis.
Step-by-step explanation:
In a hypotonic environment, water enters a cell causing it to swell, potentially leading to cell lysis or bursting. Therefore, hypotonicity can lead to cell lysis if not properly monitored.
On the other hand, hypertonicity results from too much solute in the body fluids, causing water to diffuse out of the cell. This can lead to cell shrinkage. However, it does not directly cause cell lysis.
Therefore, the correct answer is B. Hypertonicity can lead to cell lysis if not properly monitored.