I would argue that in any habitable zone that doesn't boil or freeze, intelligent life is going to emerge because intelligence is convergent.

You become an intelligent person, not because of the knowledge you get but because of how you use it.

If this is the only planet on which not only life, but intelligent life, has arisen, that would be very unusual.

It takes something more than intelligence to act intelligently.

Most of the tree of life is effectively arranged.

…only in the few universes that are like ours would intelligent beings develop and ask the question: “Why is the universe the way we see it?” The answer is then simple: If it had been any different, we would not be here!