The correct answer is (d). White blood cells are a type of blood cell that helps the body fight infection. Leukaemia is a type of cancer that affects the white blood cells. In leukaemia, the white blood cells grow abnormally and divide too quickly. This can lead to a shortage of healthy white blood cells, which can make the body more susceptible to infection. Leukaemia can also cause the white blood cells to crowd out other types of blood cells, such as red blood cells and platelets. This can lead to problems such as anemia, bleeding, and bruising.
Bone cells are the cells that make up the bones. Platelets are the cells that help the blood to clot. Red blood cells are the cells that carry oxygen to the body’s tissues.