I would choose the ones that interests you the most. Or just pick biomes that have the most biodiversity (Rainforest, Coral Reef, etc.) Or just pick anything. Tundra, Desert, Grassland, Taiga (my personal favorite). Hopefully this helps! :)
It's about the way you should stand and the way your posture should be. It's also telling you your back is in a slightly 's' shape ,hope this helps answer your question
