A common sign of cerebral palsy includes which of the following?

Cerebral palsy is a group of disorders that affect an individual's movement, muscle tone, and coordination. One of the hallmark characteristics associated with this condition includes involuntary muscle spasms. This symptom arises due to atypical brain development or damage that results in impairments in the brain's ability to control muscle movement.

Involuntary muscle spasms may manifest as stiffness (spasticity) or as uncontrolled movements (dyskinesia), leading to difficulties in movement and coordination. This can significantly impact daily activities such as walking, speaking, and even fine motor tasks.

The other options, while they may refer to different conditions or generalized muscle issues, do not accurately represent the typical signs of cerebral palsy. For example, increased flexibility is not characteristic of the condition since many individuals with cerebral palsy experience rigidity and tightness in their muscles. Persistent reflex movements can be seen in various neurological disorders but do not specifically indicate cerebral palsy. Well-coordinated motion is generally not seen in those with cerebral palsy, as the disorder typically hampers coordination due to the muscle control issues associated with it.