The human body has a tailbone, but no tail. scientists would state that this is an example of
a. relative age
b. vestigial structure
c. homologous structure
d. analogous structure

Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to