Final answer:
Using all the life-prolonging methods possible, even in the face of certain death, is a sign of denial.
Step-by-step explanation:
The answer to your question is c) Denial. According to Elizabeth Kübler-Ross, a person's first reaction to the prospect of dying is denial. This is characterized by not wanting to believe that they are dying and rejecting the reality of the situation. It is a defense mechanism to cope with the overwhelming emotions associated with imminent death.