Andrew, painted a picture of a child looking into her mothers eyes with the child’s arm, stretched out and hand pointing at the mother. The mothers eyes are focused directly on the viewer. What is the implied line in this composition

The line between the child and the mother
The line between the chip mother, and the view
The whole line of the child’s face
The whole line of the mother face

The implied line in this composition would be the line between the child and the mother, connecting their gazes and gestures.