Which group is standing?

[InquisitiveMan]

[YourFutureEx]

Group 2 because :-
Green circle :- That girl's hair are pulled towards the wall (which is actually the floor)
Blue Box :- Their clothes are loose, means there is no gravity pulling them towards their body.
And group 2 seems more relaxed. Look at their posture.

[YourFutureEx]

s18.postimg.org/.../..._4b69_b736_269ff5936465.jpg

[TwistnShout]

Two. One of the girls in 1 has the hair of someone lying down.

[catelyntje]

2 because that girl in group 1 right under the sign 1 her hair is against the floor because of gravity. While the girl in group 2 with her yellow blouse her hair is still on her shoulders If she was laying down it would had touched the red wall because of gravity.

[karahiri]

group 2 is standing. the girls in group 1, their hair makes it look like they're laying down

[karahiri]

group 1: all hands touching the floor
group 2: hand elevated, not touching the wall

[Finnick]

Look at group 2's clothes, they aren't falling against the wall...

[Redstang88]

2, you can tell by the hair and clothing

[Máiiréad]

Two is.

[Luna12]

Two is

[Nightinggale]

Group 2.

[Anonymous]

Group 2