Answer:
<em><u>No</u></em>
Explanation:
A person with a speech-related disorder can know what to say, they just have trouble saying it. It has nothing to do with their knowledge, so they wouldn't be less intelligent just because of their disorder.
I think the answer it's C
The upper airways begin with the nasal cavity and continue over nasopharynx and oropharynx to the larynx and the extrathoracic part of the trachea