Are you kidding? From a purely visual/physical perspective they all look dumpy and unattractive. I would not hit any of them based on looks alone.
Given that I am a 70 year old married man not looking for a little fun on the side, it is an unfair question. If that's all I had to chose from, I might give up being bisexual and just go for being straight out gay. No offence intended to all those ladies who exposed themselves in this photo....just saying.