Read the following passage and answer the given questions. Over the past two decades, research has emphasized the importance of accessible communication and inclusive programs for people with disabilities. The World Health Organization (WHO) estimates that over 1.3 billion people globally live with some form of disability, with communication barriers ranking among the most significant challenges. For individuals who are deaf or hard of hearing, sign language remains a primary communication tool. Studies from the National Institute on Deafness and Other Communication Disorders show that early exposure to sign language enhances cognitive skills, literacy, and social integration. However, barriers such as a shortage of trained interpreters and limited public awareness persist. In 2017, a targeted study involving 20 individuals with hearing impairments _________________________. Findings revealed that while basic signs were widely understood comprehension dropped when regional variations or complex grammatical structures were used, pointing to the need for standardized learning and broader public training. To address these gaps, several disability-focused associations have implemented bold initiatives, including large-scale sign language training for both disabled and non-disabled individuals. This direct approach fosters mutual understanding and reduces social isolation. Recent research also highlights the growing role of musicbased interventions in disability support. While commonly associated with auditory experiences, music therapy leverages rhythm, vibration, and movement to stimulate multiple senses. The Journal of Music Therapy reports that tactile vibrations from instruments—particularly percussion—can be felt and enjoyed by those with hearing impairments. For individuals with mobility or cognitive challenges, structured music activities improve coordination, memory, and emotional well-being. Music therapy extends beyond passive listening. Interactive methods—such as drumming circles, rhythm exercises, and movement-to-music sessions—encourage active engagement. Neurological studies indicate these activities promote neuroplasticity, strengthening brain connections and aiding rehabilitation for those adapting to long-term disabilities. Many associations have joined international collaborations to share expertise on combining communication tools with creative therapies. Global reports confirm that integrating sign language accessibility with music-based programs leads to measurable improvements in social participation, self-confidence, and mental health. In conclusion, evidence strongly supports combining accessible communication with sensory-inclusive activities like music therapy. By merging research-backed strategies with community engagement, organizations can create inclusive environments that empower individuals with disabilities to participate fully and thrive.
Which of the following is NOT mentioned as a challenge related to the adoption of sign language in the passage?

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**Solution:**

1. The passage highlights several challenges related to sign language adoption:
   - A shortage of trained interpreters.
   - Limited awareness among the general public.
   - Difficulty in understanding regional sign language variations.
   - Comprehension issues with complex grammatical structures in signs.

2. However, it does not mention anything about the "overuse of sign language in non-disabled populations" as a challenge.

3. Therefore, option (a) is not a challenge discussed in the passage, making it the correct answer.

**Answer:** (a) Overuse of sign language in non-disabled populations.

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