Which of the following statements about euthanasia is true?

The statement that euthanasia involves ending life in incurable disease is accurate because euthanasia is typically understood as the practice of intentionally ending a person's life to relieve them from suffering, specifically in cases of terminal or incurable illnesses. This perspective focuses on alleviating unbearable pain and suffering that individuals may experience when facing a terminal condition. The ethical discussions surrounding euthanasia often revolve around the compassion for those in unfortunate circumstances, which is a primary justification for its practice.

The other statements do not hold universally true for euthanasia. It is not practiced globally in the same way, as laws and cultural attitudes towards euthanasia vary considerably from one country to another. Furthermore, euthanasia is not always legal; it is subject to specific legal regulations in places where it is permitted. Lastly, while it can lead to emotional distress for families, this is not intrinsic to the definition or practice of euthanasia itself, as emotional responses can vary widely based on individual beliefs and experiences.