Which of the following is a common characteristic of children with low muscle tone in speech?

Children with low muscle tone, or hypotonia, often exhibit a breathy vocal quality when speaking. This characteristic arises because low muscle tone can lead to insufficient strength in the laryngeal muscles, affecting the control and closure of the vocal folds during speech production. As a result, air may escape during phonation, leading to a breathy sound.

Breathy vocal quality can affect clarity and loudness in a child's speech, making it difficult for others to understand them. It can also be a source of frustration for the child, as it may impede effective communication. While other aspects of speech production can be influenced by low muscle tone, such as breath support or clarity, the specific manifestation of a breathy quality is more directly associated with the effects of hypotonia on the muscle function necessary for phonation.