Final answer:
Abruptio Placenta, not Placenta Previa, leads to a board-like abdomen, which is due to bleeding and muscle contractions from the placenta separating from the uterus.
Step-by-step explanation:
The condition that creates a board-like abdomen is Abruptio Placenta, not Placenta Previa. Abruptio Placenta, also known as placental abruption, is a serious condition where the placenta partially or completely separates from the uterus before delivery, which can lead to a rigid, board-like abdomen due to bleeding and muscle contractions as the body responds to the internal bleeding. On the other hand, Placenta Previa is a condition characterized by the placenta partially or completely covering the cervix, which can lead to antepartum hemorrhage but does not typically cause a board-like abdomen.