Which brain region is associated with reasoning, planning, and problem-solving?

The frontal lobe is the brain region primarily associated with reasoning, planning, and problem-solving. This part of the brain is critical for higher cognitive functions, which include abstract thought, decision-making, and the ability to set and achieve goals. The prefrontal cortex, situated in the frontal lobe, is specifically involved in these processes and helps individuals assess situations, weigh options, and anticipate consequences.

In contrast, the parietal lobe is mainly responsible for processing sensory information related to touch, spatial awareness, and navigation, while the temporal lobe is involved in auditory processing and memory. The occipital lobe, on the other hand, is primarily dedicated to visual processing. Each of these lobes serves distinct and important functions, but the frontal lobe's role in reasoning, planning, and problem-solving is what makes it the correct answer.