Answer:
The answer is A I believe
Explanation:
In most cases, a lung transplant is done only after all other treatments for lung failure are unsuccessful. Lung transplants may be recommended for people under age 65 who have severe lung diseases. The major risk of a lung transplant is organ rejection. This happens when your immune system attacks your donor lung as if it were a disease. Severe rejection could lead to failure of the donated lung. Other serious complications can arise from the drugs used to prevent rejection.
The glucocortocoids has the ability of increasing the bone
loss while having a composition of serotonin in high levels will likely have
the bone density to be at its low level. To complete the sentence;
Glucocorticoids increase bone loss; high levels of serotonin lead to low bone
density.