Which mineral is essential for oxygen transport in the blood?

The correct answer is that iron is essential for oxygen transport in the blood. Iron plays a critical role in the formation of hemoglobin, which is the protein found in red blood cells responsible for binding oxygen in the lungs and transporting it to tissues throughout the body. Each hemoglobin molecule can carry four oxygen molecules, and sufficient iron levels are crucial for maintaining healthy hemoglobin production.

Without adequate iron, the production of hemoglobin can be impaired, leading to insufficient oxygen delivery to tissues, which can result in symptoms of anemia, fatigue, and overall decreased physical performance. Therefore, iron is integral to the body's ability to efficiently use oxygen, making it a key mineral for oxygen transport in the blood.