B is not right
c or a,
a is not right
c is correct because they need each other to live
hope that helped :)
Hemoglobin is contained in red blood cells,which efficiently carries oxygen from the lungs to the tissues of the body. It also helps in the transportation of carbon dioxide and hydrogen ions back to the lungs.
Answer: ADNOC Hosts Youth Circle at its Umm Lulu Offshore Platform as it Focuses on the Future - Abu Dhabi National Oil Company.
Explanation: Hope that was helpful! :D