Best Answer: B) Corpus callosum which is a wide, flat bundle of neural fibers beneath the cortex in the eutherian brain at the longitudinal fissure. It connects the left and right cerebral hemispheres and facilitates interhemispheric communication. It is the largest white matter structure in the brain, consisting of 200â250 million contralateral axonal projections.
harebrained â(comparative more harebrained, superlative most harebrained) ( 1 of an idea or plan etc) absurd, foolish or stupid. ( 2 of a person) frivolous and silly; featherbrained or scatterbrained.
hareÂ·brained. (hÃ¢râ²brÄndâ²) adj. Having or showing little sense; foolish: a harebrained scheme. Usage Note: The first recorded use of harebrained dates to 1548. The spelling hairbrained also has a long history, going back to the 1500s when hair was a variant spelling of hare.