Which part of the corpus callosum connects the frontal areas of both hemispheres?

The correct answer is the genu of the corpus callosum, which serves as the connector between the frontal lobes of both the left and right hemispheres of the brain. The genu is located at the anterior curve of the corpus callosum and facilitates communication between the prefrontal cortices. This is crucial for higher cognitive functions, such as decision-making, planning, and social behavior, which involve both hemispheres.

Understanding the role of the genu emphasizes the importance of interhemispheric communication. The rostrum, another part of the corpus callosum, connects the lower frontal areas but is not specifically focused on the frontal lobes as a whole. The body of the corpus callosum connects the parietal and some areas of the temporal lobes, while the splenium links the occipital lobes, further demonstrating the specialized roles each section plays in maintaining integrated brain function.