The medical term for the belly button is which of the following?

The medical term for the belly button is "umbilicus." The term "umbilicus" refers to the specific anatomical structure that forms as a result of the umbilical cord connecting the developing fetus to the placenta during pregnancy. Once the umbilical cord is cut after birth, what remains is a small depression on the abdominal wall, commonly known as the belly button or navel. In medical terminology, however, the correct term for this structure is "umbilicus."