What was the question for this implicit rationale, and corresponding answer?
Adult sponges are sessile. Polyps can be peduncular or sessile, and are usually viral in origin. Adult sponges have polyps.
 The answer: (C)

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
The question: What does an adult sponge have?
Options:
- (A) gills
- (B) Length
- (C) polyps
- (D) Energy.
- (E) alveoli
- (F) a cuticle
- (G) retina
- (H) Energy