Final answer:
The anterior boundary of the central sulcus is the frontal lobe, which is involved in critical brain functions such as reasoning, motor control, emotion, and language.
Step-by-step explanation:
The anterior boundary of the central sulcus is the frontal lobe. This lobe is located in the forward part of the brain, extending back to the central sulcus.
It is involved in activities such as reasoning, motor control, emotion, and language, and includes critical regions such as the motor cortex, prefrontal cortex, and Broca's area.
The frontal lobe plays a pivotal role in the brain's motor functions, from planning to execution, and is instrumental in cognitive functions linked to personality and decision-making.