Real Depth is actual distance of an object beneath the surface, as would be measured by submerging a perfect ruler along with it. Apparent depth in a medium is the depth of an object in a denser medium as seen from the rarer medium. Its value is smaller than the real depth.
THE answer is D
As G goes with C
And T goes with A
I've learned that the circulatory system is responsible for transporting nutrients and blood throughout the entire body :D
