Which of the following is a typical sign of vocal strain in singers?

Loss of range is a typical sign of vocal strain in singers because it indicates that the vocal cords are not functioning optimally. When singers experience strain, they may find it difficult to reach higher or lower notes that they could normally perform effortlessly. This can occur due to overuse, improper technique, or lack of proper warm-up. As the vocal cords become fatigued or damaged, their ability to stretch and vibrate efficiently diminishes, resulting in a limited range.

In contrast, clear tone quality, steady pitch, and increased enthusiasm generally reflect healthy vocal production and confidence in performance. These aspects would not be associated with vocal strain, as they indicate that a singer is in control of their instrument and is using it effectively.