What is the primary function of the human brain according to the passage?

The human brain is an extraordinarily complex organ, responsible for controlling thought, memory, emotion, touch, motor skills, vision, breathing, temperature, hunger, and every process that regulates our body. Composed of billions of neurons that communicate through intricate electrochemical signals, it processes vast amounts of information continuously, allowing us to interact with and understand the world around us.

What is the primary function of the human brain according to the passage?

1. A.To regulate blood pressure only.
2. B.To control all bodily processes and facilitate understanding of the world.
3. C.To produce electrochemical signals without purpose.
4. D.To store inactive neurons.