Answer:
2. French Sign Language and basic American signs.
Explanation:
The development of the present American Sign Language can be credited to Laurent Clerc and Thomas Hopkins Gallaudet. In 1817, these two men established a school named American School for the Deaf Hartford, in Connecticut.
The American Sign Language was developed as a result of the merging of the French Sign Language (LSF) along with the old American indigenous signs. Gallaudet, in his zeal to try to learn sign language so that he can help teach his neighbor's daughter, recruited Clerc. This resulted in an educational institute for deaf people in America.
Thus, the correct answer is option 2.
