: The baby is "sitting" cross-legged, with both hips and knees bent.

: One or both of the baby’s feet are positioned below the buttocks and would be delivered first. Causes and Risk Factors

: The baby’s buttocks point down, but their legs are straight up with feet near the head. This is the most common type.

A breech presentation occurs when a fetus is positioned with its buttocks or feet closest to the cervix instead of the typical head-first (cephalic) position. While common in early pregnancy, only about remain breech by full term (37–40 weeks). Types of Breech Presentation

The specific orientation of the baby's legs determines the breech type, which influences delivery options:

In most cases, the cause of a persistent breech position is unclear. However, several factors increase the likelihood: Breech baby at the end of pregnancy - RCOG