Describe the relationship between structure and function of the lower jawbone and middle ear bones of early mammalian forms.
a. These bones were still connected in early mammalian forms making it hard to hear high frequency sounds but making it easier to feed.
b. These bones were still connected in early mammalian forms which interfered with both hearing and feeding.
c. These bones were still connected in early mammalian forms which provided both better hearing and feeding.
d. These bones were still separated in early mammalian forms making it hard to hear high frequency sounds but making it much easier to feed.