What advancements for the Deaf were made in 1960?

The correct choice highlights the significant advancement of captioned films in 1960, which greatly impacted access for the Deaf community. This development improved accessibility to movies and educational content for Deaf individuals, allowing them to engage with visual media in a way that included them fully. Prior to captioned films, the inability to access spoken dialogue in films via text made it challenging for Deaf individuals to enjoy films and participate in cultural conversations.

While the other options present notable historic milestones related to the Deaf community, they either do not specifically pertain to advancements made in the year 1960 or occurred earlier in time. The invention of the telephone preceded this year, and the establishment of the National Association of the Deaf happened in the 1880s. Thus, the advancement signified by the development of captioned films specifically in 1960 holds a unique importance as it marked a turning point in media accessibility for Deaf audiences.