Answer:
The correct answer will be- widening of the cervical canal to prepare itself for delivery of the child.
Explanation:
The mucus plug is the collection of the thick and acidic substance called mucus produced by the cervix during pregnancy period. The mucus seals the cervical canal acting as a barrier to microorganism and unwanted infections to protect the uterus carrying a child.
The mucus plug breaks down when the cervical canal prepares itself for the delivery of the child. Thus, mucous breakdown acts as a precursor for the delivery of the child.
Thus, widening of the cervical canal to prepare itself for delivery of the child is the correct answer.
