Question

what type of ossification is pictured?
intramembranous ossification
endochondral ossification

Explanation:

The diagram shows the stages of bone development starting from a cartilage model, with primary and secondary ossification centers, a medullary cavity, and epiphyseal plates—key features of this ossification type, which forms most long bones. Intramembranous ossification forms bone directly from mesenchymal tissue without a cartilage precursor, which does not match the diagram.

Answer:

endochondral ossification