Question to you: What can have special excretory systems?
Options:
- (A) feces
- (B) barnacles
- (C) animals
- (D) cacti
- (E) fungi
- (F) wings
- (G) soil
- (H) insects.
Let's reason step-by-step:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Some arthropods have special excretory structures. Insects are the largest group of arthropods. Some insects have special excrectory structures. Final answer: (H).