Correct option is D
The answer is :(D) Blood
The blood is responsible to transport food, oxygen, and waste materials in human bodies. However, oxygen is carried by the red blood cells. Many other substances such as salts, are also transported by the blood.
- Oxygen: Oxygen is transported in the blood primarily by hemoglobin.
- Haemoglobin: Hemoglobin specifically transports oxygen and carbon dioxide in red blood cells, not salts.