Answer: Blue lips in children may be as a result of lack of oxygen or constriction inhibiting proper breathing.
Maria may have swallowed one of the puzzles unconsciously which may have blocked her throat and lungs affecting her breathing.
Maria should be seated upright and her mouth checked to clear and remove any object blocking her throat or lungs or constricting her from getting sufficient and adequate oxygen which may cause her lips turning bluish making her feeling distressed on the floor.
Step-by-step explanation:
Blue lip may occur when the skin on the lip becomes a bluish tint or color.
This is due to either a lack of sufficient oxygen in the blood or to extremely cold temperatures. When the skin becomes a bluish color, the symptom is generally called cyanosis. Mostly, blue lips are caused by a lack of oxygen in the blood.