Which of the following statements is true about patients with aphonia?

• A. They are unable to recognize familiar faces.
• B. They are unable to produce vocal sounds due to loss of voice.
• C. They have difficulty understanding spoken language.
• D. They experience involuntary muscle movements affecting speech.

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the term 'aphonia' by breaking it down into its roots: 'a-' meaning without, and '-phonia' relating to voice or sound production.
2. Step 2: Recognize that aphonia specifically refers to the inability to produce vocal sounds, often due to issues with the vocal cords or related neurological control.
3. Step 3: Differentiate aphonia from other conditions such as prosopagnosia (difficulty recognizing faces), aphasia (difficulty understanding or producing language), and dysarthria (involuntary muscle movements affecting speech).
4. Step 4: Analyze each statement in the problem to see which aligns with the definition of aphonia: inability to produce vocal sounds due to loss of voice matches the condition.
5. Step 5: Conclude that the true statement about patients with aphonia is that they are unable to produce vocal sounds due to loss of voice.