Answer:
I think it is D too, because a carbon footprint is the amount of carbon dioxide and other gases released into the atmosphere.
A genetic mutation is a permanent modification in the DNA sequence of a gene to what is found in most people.
Water is highly vital to living organisms. Flora and Fauna depend highly upon it, and if the water is damaged, say through oil spills, the water will lead for harm within the environment and the flowers and native animals.