Final answer:
The concept that refers to assisting in the death of a person suffering from an incurable disease is euthanasia. It can be either passive or active.
Step-by-step explanation:
The concept that refers to assisting in the death of a person suffering from an incurable disease is euthanasia. Euthanasia can be either passive or active. In passive euthanasia, treatment is withheld or withdrawn with the expectation that a patient will die sooner than they would with continued medical intervention. In active euthanasia, a patient's life is terminated using medical interventions (e.g., administering a lethal dose of medication).