C. The object would be white. White is like the mother of colors, and besides, black wouldn't let you see anything. Blue and yellow are NOT relevant.
Reading background information because it gives ideas from the author himself.
I believe the answer is fish vertebrates. i hope this helped
Ontonic Pressure, or colloid osmotic pressure, is a form of osmotic pressure exerted by proteins, notably albumin, in a blood vessel's plasma (blood/liquid) that usually tends to pull water into the circulatory system. It is the opposing force to hydrostatic pressure.
Hope this helps! <3