Nokea
The ability that humans have to perform very skilled movements such as writing is controlled by the:
Correct Answer: B
Rationale: The correct answer is B: Corticospinal tract. The corticospinal tract is responsible for controlling voluntary skilled movements like writing. It carries motor commands from the primary motor cortex to the spinal cord, enabling precise movements of the hands and fingers. The basal ganglia (A) are involved in motor planning and coordination but not direct control of skilled movements. The spinothalamic tract (C) is responsible for transmitting sensory information related to pain and temperature, not motor control. The extrapyramidal tract (D) is involved in involuntary movements and posture regulation, not skilled movements like writing.