don't know if it's right but I think the option Geographic location
Answer:
Realistic portraits of men and women of all ages were produced, and sculptors no longer felt obliged to depict people as ideals of beauty or physical perfection. Most Greek men were sculpted standing with their hips slightly to the side. When human beings stand this way it uses more muscles.The Greeks saw beauty in the naked human body. Early Greek statues called kouros were rigid and stood up straight. Over time, Greek statuary adopted a more natural, relaxed pose with hips thrust to one side, knees and arms slightly bent, and the head turned to one side.
