A nurse is reviewing the record of a client who has just been told that a pregnancy test is positive. The physician has documented the presence of Goodell's sign. The nurse determines this sign indicates:

A soft blowing sound that corresponds to the maternal pulse during auscultation of the uterus

Softening of the lower segment of the uterus

Bluish discoloration of the cervix

Softening of the vaginal segment of the cervix