The organ that can be spared in mitochondrial disorders is

(C). The mitochondria are the cell's suppliers of energy, so the organs that are most affected by the presence ofabnormal mitochondria are those that have the greatest energyrequirements, such as the brain, muscle, heart, and liver. Common manifestations include developmentaldelay, seizures, cardiac dysfunction, decreased muscle strengthand tone, and hearing and vision problems. Examples of mitochondrialdisorders include MELAS (myopathy, encephalopathy, lactic acidosis, andstrokelike episodes), MERRF (myoclonic epilepsy associated with ragged red fibers), and Kearns-Sayre syndrome (ophthalmoplegia, pigmentary retinopathy, and cardiomyopathy)