Final answer:
The basal ganglia do not send information to the cerebellum during closed-loop motor control; instead, they are involved in movement initiation and planning, distinct from the cerebellum's role in movement coordination.
Step-by-step explanation:
During closed-loop motor control, the structure that does not send information to the cerebellum is the D) Basal ganglia. The motor cortex, spinal cord, and proprioceptors all provide input to the cerebellum. The cerebellum integrates these signals and uses them to fine-tune motor commands to achieve smooth and coordinated movement. The basal ganglia, while involved in movement control, do not directly contribute information to the cerebellum in this context. Instead, they are primarily involved in the initiation and planning of movement, as well as the regulation of movements and postural control. Therefore, during closed-loop motor control, the basal ganglia are not part of the feedback loop between the cerebellum and other structures such as the motor cortex, spinal cord, and proprioceptors.