Final answer:
Before childbirth, the symphysis pubis softens due to hormonal changes during pregnancy, allowing for increased mobility of the pelvis during childbirth.
Step-by-step explanation:
Before childbirth, the symphysis pubis does indeed soften. This is due to hormonal changes that occur during pregnancy. The hormone relaxin is released, which helps to relax and soften the ligaments in the pelvis, including the symphysis pubis. This softening allows for increased mobility of the pelvis during childbirth. So, the statement is true.