Two Possible Answers

How did the physical constants of the universe become fine-tuned to support stable and ordered complexity in the universe?

How did the first DNA replicators form and allow the diversity of life as we know it to evolve?

How did the first members of the human species develop the linguistic units and structures necessary to create language/culture and sufficiently organize to dominate the world?

How did one human subgroup collectively survive with its cultural memory intact despite thousands of years of war, colonization, and geographic dispersion?

You could answer “blind chance” for all of the above, although that’s a hard sell on each question, for different reasons.

Or you could answer “intelligent cause,” which for some may also be a hard sell, but for entirely different reasons.