$$\textbf{Correct option: B}$$
$$\textbf{Solution:}$$
Option A:
$$\bullet$$ Hunting refers to killing the wild animals for meat.
$$\bullet$$ It can cause reduction in the population of a particular species.
Option B:
$$\bullet$$ Deforestation is the cutting down the trees for human requirements that results in decrease of the forest area.
$$\bullet$$ Due to deforestation the natural habitats of many wild animals get lost. This can affect their population and increased deforestation might result in the extinction of numerous wild animals.
Option C:
$$\bullet$$ Overcrowding refers to the highly populated area.
Option D:
$$\bullet$$ Scarcity of food is the presence of limited food due to many economical and environmental factors.
Hence the correct option is option B.