What is the theme of thet ext?

A、eople who are blind still have the courage and willpower to overcome theirdifficulties.
B、lind people can stil find beauty in life although they cannot enjoy thesights of the world.
C、lind people are still optimistic about life although they cannot see the worlda round them.
D、eople who are blind still can enjoy themselves if they do things that don'ti nvolve sight.