Sitting with Horizontal Thighs and Loop-back Arms
Someone posted image A as being about childbirth. That's a human-slop hallucination of a ridiculous meaning with absolutely no evidence. The meaning of sitting with horizontal thighs on A and B, equates the thighs to the waist, and the waist is the core and the horizontal plane, when the person-symbol represents a torus. Arms are energy flow symbols making outward flows that loop-back to the core via the horizontal plane.
Loops and loop-backs are a major theme in symolism, teaching cycling of energy flow between dimensions and there are thousands of examples, vertically, horizontally and a mix of those.
I particularly like image A and image D because the arm outflows show barrier penetrations outward and then returning inward.
If you want to explore birth symbolism, this collection on Pinterest has two kinds of mixed together: One kind showing a child-symbol for downward flow direction, (smallness being a label meaning divine high-density), and another kind showing no child, an open vulva, which is opposite, an upward inflow-toward-the-core meaning, and the arm loops are doing side-to-bottom loops. https://ca.pinterest.com/stevenbhalls/birth/