Induction of labor tends to be more successful when the cervix is ripe, anterior and starting to efface and dilate.

• A. When the cervix is firm and closed
• B. When the cervix is ripe, anterior and starting to efface and dilate
• C. When the membranes are ruptured and the presenting part is engaged
• D. When the cervix is posterior and closed

Answer: (B)

Induction is more likely to succeed when the cervix is ripe and in a favorable position because a soft, thinning cervix that has begun to dilate allows contractions to open the birth canal more efficiently and lets the baby descend. An anterior cervix is easier to dilate and aligns with the birth canal, making labor progression smoother. When membranes are ruptured and the presenting part is engaged, labor may progress more quickly, but these factors are not as reliable as cervical ripeness and anterior positioning. A firm, closed, or posterior cervix resists dilation, making induction slower and increasing the risk of needing additional measures or cesarean delivery.