B. Spinal nerves I think, it makes most sense to me.
Title IX is a comprehensive federal law that prohibits discrimination on the basis of sex in any federally funded education program or activity.
Your answer would be the Kidney
The kidney was the first organ to have an artificial replacement; the dialysis machine invented by Kolff in the 1940s.
The answer is D, since you are keeping your back straight. Your back will curve forward with poor posture.
