According to the grandmother hypothesis, what are the benefits of our prolonged juvenile period?
a) It is unlikely that foraging success should be limited primarily by body size rather than experience
b) According to the grandmother hypothesis, once adult size is reached, individuals will quickly learn the skills necessary to become proficient adult foragers
c) Any benefits of our prolonged juvenile period are the by-product of selection for long life span
d) All of these statements support the grandmother hypothesis and its implications for foraging success