Answer:
A). A language used by Deaf people
Explanation:
Deaf people (and some hearing) use sign language as a way to communicate. Since they cannot hear they have to use sign language to communicate.
Hearing people use sign language to communicate to the Deaf. Though there are other reasons, that is the most common.
American sign language is one of many different dialects of sign language. Similar to how we have English, Spanish, German, etc., they have American Sign Language, Spanish Sign Language, German Sign language, and many more.
