One of

Euthanasia may be one of ways to deliver health resources fairly to people who still want to live.

This is a direct translation from Bahasa Indonesia: salah satu.

For every noun in English it is important to communicate one of three meanings:

  • One of many
  • All of them everywhere
  • This one exactly

In the opening example the writer communicated successfully. However, the sentence is gramatically incorrect. If you really must use one of then you need more grammar:

Euthanasia may be one of several ways to deliver..
('several' behaves like 'many')
Euthanasia may be one of the best ways to deliver..
('one of' + the + superlative adjective + plural count noun)

You can see how easy it can be to introduce grammatical error, or to choose the wrong word to follow one of! A much easier and far more common way to communicate one of many is using the indefinite article a (or an) - NOT one of.

Want to communicate one of many? Use the indefinite article:

Euthanasia may be a way to deliver health resources fairly to people who still want to live.