What is the primary function of relaxin?

Soften cervix and pelvic ligaments

The correct answer is Option (2) → Soften cervix and pelvic ligaments

Relaxin is a reproductive hormone produced by your ovaries and the placenta. It loosens and relaxes your muscles, joints and ligaments during pregnancy to help your body stretch. Relaxin also helps your body prepare for delivery by loosening the muscles and ligaments in your pelvis. It can make you more prone to injury, but most people never feel its effects.