Which area of the tongue corresponds to the Liver?

The area of the tongue that corresponds to the Liver is indeed the left edge of the tongue. In traditional Chinese medicine (TCM), the tongue is a map of the internal organs, and different regions correspond to specific organs. The liver's representation on the tongue is particularly located on the left side, reflecting the emotional, physical, and energetic aspects associated with liver health.

This correlation is rooted in the TCM understanding of the Liver, which is linked to the Wood element and is responsible for the smooth flow of Qi and Blood throughout the body. The left edge of the tongue represents the Liver, and practitioners will often examine this area to assess the health and conditions of the Liver, as well as to gather information regarding other related systems in the body.

Other areas such as the right edge, both edges, or the root of the tongue correspond to different organs, which is why they are not the correct answers for this question. The right edge of the tongue is typically associated with the Gallbladder, both edges could relate more broadly to the Spleen and Stomach, and the root of the tongue is generally indicative of the Kidney and other deeper organ systems, not specifically the Liver.