Final answer:
Bertha's most obvious symptom of laryngitis would be hoarseness or loss of voice. This condition is caused by inflammation of the vocal cords in the larynx, often due to infection or overuse.
Step-by-step explanation:
The most obvious sign or symptom of laryngitis that Bertha may experience is hoarseness or loss of voice. Laryngitis is caused by inflammation of the larynx, commonly due to an infection, which can be viral, bacterial, or even fungal, or due to overuse of the vocal cords. Environmental factors such as dry air, irritants, or allergens can also contribute to laryngitis.
The larynx, also known as the voice box, contains the vocal cords that open and close to create sounds through vibration. When the larynx is inflamed, the vocal cords swell, which distorts the sounds produced, leading to hoarseness or inability to speak. Treatment typically involves resting the voice and avoiding irritants, along with hydration and, where appropriate, medication to reduce inflammation or treat infection. the hallmark symptom of laryngitis is a hoarse voice or difficulty speaking, and it's primarily caused by inflammation of the vocal cords due to infection or excessive use.