Final answer:
Whispering is characterized by air turbulence through partially adducted vocal folds, no voicing, vocal fatigue, and a posterior glottal opening/chink.
Step-by-step explanation:
A. The sound heard in whispering is produced by air turbulence through partially adducted vocal folds. When whispering, the vocal cords are only partially closed, allowing air to pass through and create turbulent airflow. This turbulence produces the sound that is heard during whispering.
B. No voicing occurs during whispering. Voicing refers to the vibration of the vocal folds. Since the vocal folds are not vibrating during whispering, no voicing occurs.
C. Whispering can cause vocal fatigue. When whispering, the vocal folds are adducted (partially closed) and the muscles in the larynx and throat are working harder than usual to produce sound. This increased effort can lead to vocal fatigue.
D. There is a posterior glottal opening/chink during whispering. The glottis is the opening between the vocal folds. During whispering, the glottis is partially open at the back, creating a chink or opening through which air can pass.
E. None of the above options are true. The correct answer is that all of the statements are true about whispering.