Iron,
Iron is a part of hemoglobin, a protein that transports oxygen from the lungs to the tissues. It helps provide oxygen to muscles. Iron is important for cell growth, development, and normal body functions. Iron also helps the body make some hormones and connective tissue
Yooo answer i would say is B
Agent Orange is an herbicide and defoliant chemical, one of the tactical use Rainbow Herbicides. It is widely known for its use by the U.S. military as part of its herbicidal warfare program, Operation Ranch Hand, during the Vietnam War from 1961 to 1971. It is a mixture of equal parts of two herbicides, 2,4,5-T and 2,4-D. In addition to its damaging environmental effects, the chemical has caused major health problems for many individuals who were exposed.