Correct option is B
The correct answer is:
B. Oxygen
Explanation:
The heart is primarily associated with pumping blood throughout the body. Similarly, the lungs are primarily associated with oxygen, as their main function is to facilitate the exchange of oxygen and carbon dioxide in the respiratory process.
Other options do not fit the analogy:
Thus, the most appropriate answer is Oxygen.
- Nose: While related to breathing, it is not directly analogous to the lungs' primary function.
- Chest: It is the cavity housing the lungs, not their function.
- Respiration: This is the overall process but not specific to the role of the lungs.