What is a valid reason for making efforts to maintain the biodiversity of the planet earth?

A Biodiversity makes ecosystems stronger, more stable, and more resiliant to environmental change.

B A biodiverse plant provides humanity with many foods, medicines, and various comsumable products.

C We have an ethical obligation to protect the variety of species on the planet from demise cause by human activity.

D All of the above are valid reasons for maintaining the biodiversity of the earth.