Choose the best definition of this term. ossification
a.) immovable joints
b.) decomposing bone cells
c.) replacement of cartilage with osteocytes

The process by which a cartilage intermediate is formed and replaced by bone cells is called endochondral ossification.

Explanation:

Intramembranous ossification is the process of bone development from fibrous membranes. It is involved in the formation of the flat bones of the skull, the mandible, and the clavicles. Ossification begins as mesenchymal cells form a template of the future bone.

answer; i believe the correct answer is (progesterone);

a problem could be dealing witj emotional stress..all of these factors contribute to emotional stress.