Residents with Parkinson's disease typically do not exhibit which of the following?

Residents with Parkinson's disease typically do not exhibit flexible muscles because one of the hallmark characteristics of this condition is muscle rigidity. In Parkinson's disease, the brain undergoes changes that lead to stiffness and a lack of flexibility in the muscles, which can affect movement and coordination. This rigidity often contributes to the other symptoms associated with the disease, such as shuffling while walking, experiencing tremors, and having postural instability.

Other symptoms like shuffling, tremors, and postural instability are common manifestations of Parkinson's disease. Shuffling gait happens as a result of muscle stiffness and poor balance. Tremors are typically seen at rest and are one of the most recognizable symptoms of the disease. Postural instability refers to difficulties with balance and can lead to falls, which is also frequent in individuals with Parkinson's.

Thus, the characteristic of flexible muscles does not align with the symptoms and effects of Parkinson's disease, making it the correct choice in this context.