What do snails and slugs lack?
Options:
- (A) eyes
- (B) a nervous system
- (C) kinetic energy
- (D) Chlorophyll
- (E) Energy.
- (F) life
- (G) a backbone
- (H) Energy OK. Let's think hard:

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
Invertebrates are animals that lack a vertebral column, or backbone. Snails and slugs are invertebrates. Snails and slugs lack a backbone.
So, the final answer is (G).