The passage implies that different regions of the brain:

The human brain, an intricate network of billions of neurons, is responsible for our thoughts, emotions, and actions. While often conceptualized as a single entity, it is divided into distinct regions, each specializing in different functions. For instance, the frontal lobe is associated with decision-making and problem-solving, while the occipital lobe processes visual information.

The passage implies that different regions of the brain:

1. A.Are equally important for all functions.
2. B.Compete for control over actions.
3. C.Are primarily responsible for involuntary actions.
4. D.Exhibit functional specialization.