The answer is THE SOMATIC NERVOUS SYSTEM.
The somatic nervous system is part of the peripheral nervous system. It is major function is voluntary movement of the muscles and organs and reflex movement. During the processing of voluntary movement, sensory neurons which transmit information about sight, smell, sound, taste and tactile information carry impulses to the brain and the spinal cord.
B .How organisms could change .
I honestly think that a or d would be the best options. I would start with D and if that doesn't work try a.
Answer:An inherited, natural selection.
Explanation: Adaptation is the process through which living organisms develop mechanisms this mechanisms may be Inherited to enable them survive competition and other prevailing circumstances. Which can also be environmental, climatic factors etc.
Adaptation helps to ensure the principle of NATURAL SELECTION,where organisms which have been able to develop similar mechanisms or have natural mechanisms that has enabled them to survive the prevailing circumstances in the habitat.
Undisturbed rock formations on mountain tops are basically an indication of the Earth's age. This can be supported by the law of proposition. This law states that the youngest sediments or rock are found at the top of the sequence and the oldest are found at the bottom - given they're undisturbed. So the higher mountain tops or rocks formation are, the more we can say that the Earth is indeed very old.