What Are Carbon Sinks

What are carbon sinks?

A) Locations where carbon has accumulated and fossil fuels have developed
B) Natural areas where, through photosynthesis, carbon dioxide in the atmosphere is reduced
C) Areas where microbes break down organic waste
D) Forests that have been clear-cut and therefore have released more carbon dioxide into the atmosphere
E) Locations where bacteria are used to break down oil and clean up oil spills