The given situation is an example of active euthanasia.
Euthanasia is an act where the life of an individual gets ended to relieve him /her from a prolonged illness.
Active euthanasia is one of the forms of euthanasia where a person is deliberately killed due to an overdose of painkillers or drugs. In the provided situation, the intentional act that was done by Damon killed her wife's suffering by injecting the lethal dose of morphine.
Therefore, active euthanasia is represented in the provided example.
Learn more about the voluntary euthanasia in the related link:
https://brainly.com/question/12030257
#SPJ1