The answer is long
The bone indicated by the arrow is femur bone. It should be classified as the long bone. Other example for long bones would be tibia and fibula. Short bone would be carpal or tarsal bones. Flat bone could be found in skull. Irregular bone would be the vertebrae or pelvic.
I believe your answer would be "Cell division"
DNA replication occurs just before the process of cell division which is also known as mitosis.
Mitosis is when the cell is being divided into two and this is when DNA starts to replicate and it produces more cells and the process goes on and on and no.
Hope this helps. c:
A vigorous excersie that requires a lot of energy
