This is tough, all of these pictures are amazing..
I think all of them are well composed so my picks are based on the content.
Something I would have photographed.
Since I can only vote for 3, here are my votes:
14: I like old structures... the reflection in water is amazing.
35: I'm biased. I like Jenny lake and I think its one of the most spectacular lake out there.
18: Just like it.