Answer:
A. Forest environments do not remain intact.
Step-by-step explanation:
Clear cutting of a forest implies harvesting of trees in the forest within the same period. It can be done so as to regenerate new species of trees, but if not well managed, it can lead to gradual deforestation.
It should be noted that when the process is continuous and not well managed, then disaster looms ahead.
Thus from the given question, the appropriate answer is option A.