Answer:
Crabs. Crabs belong to the subphylum Crustacean, the largest group of marine arthropods, which also includes lobster, shrimp, and krill, a shrimp-like crustacean. Crabs move sideways, walking on four pairs of legs, and holding their two legs with claws away from their body.
A. The sentence works fine. one could argue B, but a colon is used to separate a run-on or show two complete thoughts in the same sentence, so arguably B would not work either.
D. It needs a comma before and.
The correct answer is: Inventions.
Copyrights can apply to art, literature, and music. But when it comes to inventions, it is called "patent." If a product or invention was patented by an inventor, he owns all the rights including the manufacturing, production, and distribution.