Final answer:
Pregnant women can tolerate the normal blood loss associated with childbirth due to increased blood volume.
Step-by-step explanation:
Pregnant women can tolerate the normal blood loss associated with childbirth due to increased blood volume. By the time of childbirth, blood volume increases by approximately 1-2 liters, which helps to manage the demands of fetal nourishment and waste removal. The greater blood volume ensures that there is enough blood available even after normal blood loss during childbirth.