Final answer:
Damage to the external iliac artery will primarily affect blood delivery to the lower limbs, as it is responsible for supplying blood to this region before becoming the femoral artery.
Step-by-step explanation:
Damage to the external iliac artery will affect delivery of blood to the lower limbs. This artery is crucial as it exits the body cavity to become the femoral artery, which supplies blood to the lower limbs, including the deep muscles of the thigh and the regions of the knee. The proper functioning of the lower limbs is dependent on the blood flow through the external iliac artery, as it delivers necessary oxygen and nutrients. In the event of damage, there would be compromised blood delivery to these areas, potentially affecting the health and function of the legs.