Which observation would not suggest a physiological impairment underlying a speech disorder?

• A. Dentition within normal limits for age
• B. Stridency deletion and related phonological processes
• C. Developmental delay with age-inappropriate speech
• D. Motor-speech disorder requiring voluntary oral movements

Answer: (B)

The main idea here is telling apart what signals a problem with the speech mechanism itself from what signals a normal or learning-based pattern in how children develop speech sounds. Stridency deletion is a phonological pattern—it's about which sounds the child uses or omits as part of learning to produce speech. This kind of error typically reflects speech sound development and simplification strategies rather than a dysfunction of the mouth, lips, tongue, or the neuromuscular control of those muscles. In other words, it doesn’t point to a structural or motor impairment in the speech mechanism.

By contrast, observations like a motor-speech disorder requiring voluntary oral movements suggest a real motor impairment in the speech system; developmental delay with age-inappropriate speech points to broader developmental or cognitive issues that can affect speech, and dentition within normal limits helps rule out dental anomalies but doesn’t by itself address motor or neurological factors. So stridency deletion stands out as not indicating a physiological impairment underlying the speech disorder.