Final answer:
The ventral horn of the spinal cord sends out neural motor instructions to control skeletal muscle movements. Option B.
Step-by-step explanation:
The portion of the spinal cord that sends out neural motor instructions is the ventral horn. The ventral horn is located in the gray matter of the spinal cord and contains multipolar motor neurons. These motor neurons are responsible for transmitting motor commands from the spinal cord to the skeletal muscles.
For example, when you decide to move your hand, the motor command is initiated in the ventral horn and travels through the ventral root of a spinal nerve to reach the muscles in your hand. This allows you to perform voluntary movements.
In summary, the ventral horn of the spinal cord is responsible for sending out neural motor instructions to control skeletal muscle movements.
So Option B is correct.