- As number of organisms in a group increases , the chance of survival of each organism will increase
- Offspring are a kind of group of organisms
- Hence, as the number of offspring an animal has increases , the number of offspring surviving will increase

- As the number of offspring an animal has increases , the number of offspring surviving will increase
- Some animals have offspring by laying eggs
- So, as the number of eggs laid by an animal increases , the number of eggs that will hatch will increase

Hence, as the number of eggs laid by an animal increases , the number of eggs that will hatch will increase
Q: Which best explains why some reptiles and amphibians lay an abundance of eggs?
Context:
- Some animals have offspring by laying eggs 
- As number of organisms in a group increases , the chance of survival of each organism will increase 
- Offspring are a kind of group of organisms