The color of the horse coat is determined by chromosomes. The genes present on the chromosomes is responsible for the coat color of horse. The dominant coat color of the horse is transferred to the horse from its parents. This is inherited pattern and the coat color can be black, white, brown, etc.
I think it is A because deforestation happens when toxins start polluting and eroding the forest. destruction lack oxygen and erosion is a big part of deforestation.