Answer: The correct answer is Hemoglobin.
Hemoglobin is a red colored pigment, which is present in the red blood cells. It is made up of four protein chains, which are two alpha and two beta chains. Each chain consists of a heme group, which contains iron. It helps in the transport of oxygen in the body.
On the contrary, testosterone is a steroid hormone, which is derived from cholesterol ( a fat-like waxy substance). A polysaccharide is made up of simple sugars like glucose.
Thus, hemoglobin is made up of protein.
