If Practical Applications Arise from This or Similar Metagenomic Studies,what

If practical applications arise from this or similar metagenomic studies,what might these be?

A) New genes with useful properties may be identified and ultimately put to use.
B) New microbial species could be isolated from seawater.
C) An increased knowledge of the diversity of marine ecosystems could lead to increased appreciation of diversity in all ecosystems.
D) Species discovered in the Sargasso Sea may also be found to inhabit less-remote waters.