The observation that best supports the claim that choosing to mate with large females increases a male sand lizard's reproductive success is:
After mating, large females produce more eggs than small females.
This observation aligns with the claim because if large females produce more eggs, then by mating with them, the male lizard is increasing the potential number of offspring that can result from that mating. More eggs mean a higher chance of successful reproduction and passing on genes to the next generation.
It is important for the male lizard to mate with large females because the number of eggs produced can directly impact the reproductive success of the male. By choosing to mate with large females, the male sand lizard increases the chances of having more offspring, which ultimately enhances his reproductive success in the population.
