OK so I believe the best choice for you to go with will be that she does not have a job.
Answer:
for examples: you are riding a bike before you ride a bike wear you gear first.
because gears can helps you from getting injury.
for another examples: you are on the road to don't get injury or anything you need to follow all the rules and beware of any situation that can happen in the road.
17. Epilepsy
18. Neurons
19. Ligament
20. Osteoporosis
Have a great day ☺️
Answer:
periosteum
Subchondral tissue.
The tough, thin outer membrane covering the bones is called the periosteum. Beneath the hard outer shell of the periosteum are tunnels and canals through which blood and lymphatic vessels run to carry nourishment for the bone. Muscles, ligaments, and tendons may attach to the periosteum.