Which of the following is NOT a common sign of dysarthria?

Normal articulation is the correct answer because it indicates the absence of difficulty in speech production, which is a hallmark of dysarthria. Individuals with dysarthria typically struggle with speech clarity due to weakened or uncoordinated muscles involved in producing speech sounds. This often results in slurred speech, a muffled voice quality, and difficulty controlling breath while speaking. Conversely, normal articulation suggests that a person is able to produce speech sounds clearly and correctly, which contradicts the symptoms usually associated with dysarthria. Therefore, recognizing normal articulation as not a sign of dysarthria highlights the condition's characteristic impairment in the motor aspects of speech rather than cognitive or linguistic deficits.