Which Statement Best Explains Survivorship Curve B

Question

Which statement best explains survivorship curve B?
A) It is likely a species that provides little postnatal care, but lots of care for offspring during midlife as indicated by increased survivorship.
B) This curve is likely of a species that produces lots of offspring, only a few of which are expected to survive.
C) It is likely a species where no individuals in the cohort die when they are at 60-70% relative age.
D) There was a mass emigration of young to middle-aged individuals in this cohort.
E) Survivorship can only decrease; therefore, this curve could not happen in nature.

Accepted Answer

Survivorship curves depict the number of individuals in a cohort that survive to different ages, and they can only decrease because once an individual dies, it cannot be brought back to life. Thus, a curve showing an increase in survivorship over time, as implied in the question, is not possible in nature.