A palliative treatment is one that:

A. develops from normal genes
B. arises from glandular origin
C. eases a disease's effects
D. aids or contributes

c
Rationale: Palliative treatment (which eases a disease's effects) may be used if a cure is not possible, to minimize the discomfort caused by cancer, or to slow the progression of the disease and prolong the patient's life.