Why do females have wider pubic arch?

Females have a wider pubic arch primarily due to adaptations for childbirth. A broader pelvic structure facilitates the passage of a baby during delivery, allowing for a wider birth canal. This anatomical difference is a key characteristic distinguishing female pelvises from male pelvises, which tend to be narrower and more robust. Additionally, the wider pubic arch is part of the overall pelvic morphology that supports various reproductive functions.