Three males and one female are posing for a photograph with snow on the ground and mountains covered with green trees and snow in the background.
Four people pose for an outdoor photo.
If there are three males and on female posing near the mountains, then there must be four people posing outdoors.
Three males and one females adds up to four people.
Three males and one female are four people. Snow, mountains, and trees are outdoor features so this means the photo is taken outdoor