Based on this video, it looks like the correct answer is “intermediates”, though I probably would have gone for full rain tires myself. Especially for driving in the salt-water surf.
I’m not sure what the purpose of this ad is, other that demonstrating the potential destruction of a Red Bull Renault F1 car. Sand is the enemy of delicate and precisely fitted parts, but salt water is even worse; unless this is an old chassis with an end-of-life motor, this pointless video was damn expensive to film.
It would have been hilarious if Mark Webber was driving Sebastian Vettel’s car, especially if he drove it straight into the surf. Maybe then Vettel’s paranoia over his position on the Red Bull team would be justified.