**Core Concept**
The corpus callosum is a thick bundle of nerve fibers that connects the two hemispheres of the brain, enabling inter-hemispheric communication and coordination of functions.

**Why the Correct Answer is Right**
The corpus callosum plays a crucial role in facilitating the exchange of information between the left and right hemispheres, particularly in tasks requiring bilateral coordination, such as motor functions, sensory processing, and cognitive tasks like problem-solving and decision-making. The corpus callosum contains approximately 200-300 million axons, which are grouped into four distinct regions: the rostrum, genu, body, and splenium. Damage to the corpus callosum, such as in callosal agenesis or traumatic brain injury, can lead to impaired inter-hemispheric communication and associated cognitive and behavioral deficits.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not a known function of the corpus callosum.
* **Option B:** While the corpus callosum does play a role in sensory processing, this option is too broad and does not accurately describe its primary function.
* **Option C:** This option is not a known function of the corpus callosum.

**Clinical Pearl / High-Yield Fact**
Damage to the corpus callosum can lead to a condition known as "mirror writing," where an individual writes with their non-dominant hand, mirroring the writing of their dominant hand.

**Correct Answer:** B. Facilitates inter-hemispheric communication and coordination of functions.