Mitochondria are usually absent in:

Explanation

Option C is correct.Mitochondria are usually absent in mature RBC's. Mature RBC's, or erythrocytes, are the most abundant type of blood cell. They are responsible for transporting oxygen from the lungs to the tissues of the body. Mature RBC's are also responsible for removing carbon dioxide from the tissues and transporting it back to the lungs. Mature RBC's do not have mitochondria because they do not need to produce their own energy. They obtain the energy they need from the glucose that is present in the blood. The other options all have mitochondria: Muscle cells: Mitochondria are essential for muscle cells because they provide the energy needed for muscle contraction. Cardiac cells: Cardiac cells, or heart muscle cells, also have mitochondria because they need a lot of energy to pump blood throughout the body. WBC's: WBC's, or white blood cells, have mitochondria because they need energy to fight infection and protect the body from disease