Blood in mammals transports oxygen because it contains the pigment called
Answer Details
The pigment that transports oxygen in the blood of mammals is called "haemoglobin". Haemoglobin is a protein molecule found in red blood cells that has a high affinity for oxygen. When oxygen enters the lungs, it binds to the haemoglobin molecules in the red blood cells and is transported throughout the body. As the oxygen-depleted blood returns to the lungs, the haemoglobin releases the oxygen, which is then exhaled. This cycle repeats with each breath, allowing oxygen to be transported to all the cells in the body that require it.
The other options given, chlorocruorin, melanin, haemocyanin, and haemoerythrin, are also pigments found in various animals, but they are not involved in transporting oxygen in mammalian blood. Chlorocruorin is found in some marine worms and transports oxygen in their blood, melanin is a pigment responsible for skin coloration, and haemocyanin and haemoerythrin are pigments found in the blood of some invertebrates that transport oxygen.