A pregnant client in her third trimester complains of lower back pain. The nurse explains that this discomfort is common due to postural changes. Which of the following best explains the role of lordosis in pregnancy-related back pain?

Lordosis refers to a straightening of the spine to accommodate fetal weight, which reduces flexibility and causes back pain.

Lordosis is caused by compression of spinal nerves from the expanding uterus and is typically a sign of neurologic compromise.

Increased lumbar lordosis is a compensatory change in spinal curvature that shifts the center of gravity forward to balance the enlarging uterus.

Lordosis develops due to increased thoracic spine curvature and leads to shoulder pain in late pregnancy.