What is the term for doctors stopping the treatment of a terminally ill person by turning off respirators or other life-support machines?

Answer: Passive euthanasia

Explanation:

Passive euthanasia is the deliberate termination of the treatment of a terminally ill person by turning off respirators or other life-support machines. Passive euthanasia is when death is brought about by an active doing or by omission. This can be by withdrawing or withholding treatment: Withdrawing treatment: for example, switching off a machine that is keeping a person alive, so that they the person can die of their disease. Withholding treatment: for example, when surgery are not carried that will extend life for a short time.