Oxygen transportation in a human body takes place through 1. I. Blood 2. II. Lungs 3. III. Tissue The correct sequence of transportation is

1. The question asks for the correct sequence of oxygen transportation in the human body involving Blood, Lungs, and Tissue. 2. Gaseous exchange begins in the Lungs (II), where inhaled oxygen diffuses from the alveoli into the pulmonary capillaries. 3. The oxygen then enters the Blood (I), binding primarily to hemoglobin in red blood cells. 4. The circulatory system transports the oxygenated blood throughout the body. 5. Finally, oxygen diffuses from the blood in the systemic capillaries into the body Tissues (III) to be used for cellular respiration. 6. Thus, the correct sequence is Lungs (II) → Blood (I) → Tissue (III).