Answer is C. genome conservation.
A set of DNA, including all of its genes makes up genome of an organisms. Each genome contains all of the information needed to build and maintain that organism. The population of endangered species is small which suffer from reduced genetic diversity through inbreeding.
In conservation genomics, the study of genetic diversity in all genes is carried out for better understand their implications to ecology, health, and disease. This random loss of genetic diversity in diminishing populations is a process known as ‘genetic drift’ and is further complicated by ‘inbreeding depression’, where related individuals breed with each other which results in further loss of genetic diversity.
Using genome editing techniques to carefully reintroduce the lost genetic diversity back into the current, endangered population.