Even Before Organs Begin to Form, Rudimentary Versions of the Shapes

Multiple Choice

Even before organs begin to form, rudimentary versions of the shapes of bones begin to form in a fetus due to the

A) activity of growth hormone.
B) formation of secondary ossification sites.
C) activity of chondroblasts.
D) formation of an osteoclast.
E) breakdown of hyaline cartilage.