Females for Many Species Vary in the Number of Offspring

Females for many species vary in the number of offspring that they will have each year. Investment in producing offspring and/or caring for offspring also varies. In an evolutionary sense the more offspring that survive to reproductive maturity, the greater the fitness. The graph below shows the relationship between number of offspring and offspring survival. What does the graph suggest about fitness of the parent?

A) With higher numbers of offspring, their survival also increases.
B) With lower numbers of offspring, there is a higher chance of survival.
C) Survival is unrelated to number of offspring.
D) The number of offspring that survive cannot be determined from the graph.