Final answer:
A child with difficulty in movement control and accuracy may have issues with the basal ganglia and the cerebellum, which regulate movement control, coordination, and posture.
Step-by-step explanation:
A child who has difficulty controlling the speed and accuracy of movements and shows inaccurate reach and grasp is likely experiencing issues with the basal ganglia and/or possibly the cerebellum. These interconnected brain areas play crucial roles in movement control, coordination, and posture. The basal ganglia, for instance, are involved in regulating the initiation and smooth execution of movement, and any damage to these areas can lead to motor impairments, such as those seen in Parkinson's disease. Meanwhile, the cerebellum is essential for balance, coordination, and refining motor movements, making it necessary for accurate reach and grasp.
Additionally, the motor cortex could be involved as it communicates with the cerebellum to plan and execute movements. The sensory feedback from the visual cortex to the cerebrocerebellum is also integral to guiding movement. Dysfunction in these areas may result in the difficulties described in the question.