It would be D. The Pelvic Cavity
Because the thoracic cavity is your chest area, the spinal cavity has to do with your spinal cord and the cranial has to do with your brain.
She should try to get a day off so she can let her muscles relax and have time to rebuild new muscle. Remember that muscle grows slowly so within 24 hours muscle starts to grow thus she should rest for at least 1 or 2 days so she doesn't exhaust her body.
Can slow reaction rate, increase temper and can make it harder to concentrate.
