Question

why only R.B.C carry oxygen in the body​

Answer 1

Answer:

Yes

as they have a pigment called hemoglobin in them which carry oxygen and supply it in the body where needed

Answer 2

Red blood cells contain hemoglobin and are covered with a membrane composed of proteins and lipids. Hemoglobin—an iron-rich protein that gives blood its red color—enables red blood cells to transport oxygen and carbon dioxide. Red blood cells do not have nuclei, allowing for more room for hemoglobin.