In "active and passive euthanasia", what is the view that rachels is defending

The answer is both active and passive euthanasia are sometimes permissible

Rachel argues that there is some cases where a patient is trapped in a situation where he/she no longer be cured, unable to function, and experienced a high amount of pain.

In this cases, She believed that euthanasia should be permissible because it considered as an act of mercy.