Since A, B and C are correct. I think the answer is D. Linguistic grammaticality and content or effective communication are separate matters.
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Answer:
Sign language provided a more preferable choice that enabled free and natural communication
Explanation:
The use of oralism is limited among those with hearing disability as those who could very well comprehend the information being transmitted usually have a discursive consciousness or understanding of the way the people spoke, thereby limiting the dissemination of information, such that those who understood the oralism will sometimes pass unto their colleague the given information using sign language making sign language the foundational or natural language upon which Deaf cultural competencies can be developed.
