Randomly generating platforms?

So I’m making this game where you have to move back and forth to stay on the platform. How do I get the platforms to spawn infinitely based on the ones I have already curated? I need it to be one large platform, followed by a wood plank placed one of 3 places, to the right, to the left, and to the middle. Any help is appreciated, thanks!

 

You would write a script that has a public GameObject variable for the platform prefab, and then some logic in the Update method to Instantiate that prefab as needed, adjusting the new instance's transform.position to put it in the right place.

Try that, and then post back with a more specific question if you get stuck.

 

Got everything figured out. ^^