The correct option is A Co-ordination of cerebrum
The corpus callosum is a bundle of nerve fibres found in the mammalian brain. It connects the left and right hemispheres of the brain and is responsible for most of the communication between the two. It is composed of white matter, that is, myelinated nerve cells, or axons, whose primary function is to connect grey areas together with neural impulses. The corpus callosum is the largest white matter structure in the brain, found in its interior. Grey matter occupies the periphery. Hence, if the corpus callosum is removed in the mammalian brain, then the communication between cerebral hemispheres will be lost.