Answer: to rid the forest floor of accumulated deadwood and brush
Explanation:
A fire can be a natural or induced limiting factor which is expected to reduce the growth, abundance and distribution of the population of species in an ecosystem.
In human induced fire certain regions of the forests are set on fire and in some regions which exhibit unwanted shrubs and grasses in control amounts to eradicate those shrubs and grasses.
On the basis of the above explanation, to rid the forest floor of accumulated deadwood and brush is the correct option.
