>>31042126Dude.
First of all, Sand Veil is not an option. Not particularly defensive either, and also works on sand just like Sand Force, but that's beyond the point since your twinky little brain can't even comprehend the hard stuff. You see, sweetie, Sand Veil is banned. No point mentioning it.
Second, Tangling Hair isn't really a defensive ability, just a shitty one. It's sort of like Static but more consistent with the Speed drop, it works better with an offensive mon than with a defensive one. Even if you had great bulk, what would you do with it? Defensive mons don't care about speed. It's obviously meant to activate on a resisted switch in. Dugtrio can do that with the Steel type and its number of resistances. But it's still very niche and horrible because once the opponent figures it out, it's worthless.
Sand Force is obviously the best choice. It's consistent, works great with its STAB's and its best coverage (Rock moves), and sand is even more easy to get started this gen with Gigalith as a new sand setter.
I can only hope you can comprehend the basic stuff in this post.