Final answer:
Matter or tissue that has myelinated nerve fibers with few or no neuronal cell bodies or dendrites is referred to as white matter due to its appearance, which is white because of the myelin content.
Step-by-step explanation:
The content loaded matter or tissue that has myelinated nerve fibers with few or no neuronal cell bodies or dendrites is known as white matter. White matter within the central nervous system appears white due to the high lipid content of myelin, which insulates the axons. Unlike gray matter, which contains a large number of neuron cell bodies and is found in regions such as the cerebral cortex and nuclei of the brain, white matter consists mainly of myelinated axons and is primarily involved in transmitting signals throughout the nervous system. Therefore, the correct answer to the student's question is C. white.