Answer:
The correct answer is - option D. intramembranous ossification
Step-by-step explanation:
Conversion of mesenchymal tissue into bone directly is known as intramembranous ossification. The bone formation is the process that involves the conversion of mesenchyme or primitive connective tissue from laying of bone directly. It is made up of granular cells and fibers in the matrix.
It is the formation of tissue of bone in a fetal without any template or cartilage base during fetal development.
Thus, the correct answer is - option D. intramembranous ossification