Respuesta :
I think it is question A.
I'm not completely sure but B. is wrong because farms take up animals habitat making a habitat loss. For C. They plant gardens and food moving the top layer of land creating soil erosion. Finally, for D they put in more mud and soil to make farms which falls into rivers blocking them up causing flooding.
Answer:
the anser would be A: increased carbon dioxide levels! hope i helped!
Explanation: