I choose abiogenesis.

Until a considerable amount of time has passed after the universe came to be, the conditions of the universe were not eligible for the existance of living organisms.

Even though living organisms (even amino-acids though hey are not living) were spontaneously created, they would be destroyed in the other instant.

But after this considerable amount of time has passed and planets (this may include any planet from any galaxy) got colder and more stable, we see that conditions appeared for the building blocks of life (rna, amino-acids and so) to be and stay stable.

This is more or less demonstrated by Stanley Miller

Stanley Miller - Wikipedia, the free encyclopedia.

As a conclusion we can say that living organisms are formed from non-living matter in the appropriate conditions of colder planets.