Answer: All of the above
Explanation: Palliative care seeks to help people with serious illnesses feel better. Someone who is going through a cancer process can improve not only emotionally but also physically. The latter has been demonstrated through various scientific investigations where people who have a better state of mind tend to last more years of life and be stronger.
In the case of this study, a person with lung cancer who receives good care will be less likely to develop depression since they will not be alone and will feel support from others. It feels understood and when manifesting these symptoms of well-being, its body assimilates it as something positive and delays some manifestations of the disease.