The third choice is correct.
I hope this helps! :)
An inspiring picture-book biography of Louis Braille—a blind boy so determined to read that he invented his own alphabet. Louis Braille was just five years old when he lost his sight. He was a clever boy, determined to live like everyone else, and what he wanted more than anything was to be able to read
The correct statement about round character is that round characters are dynamic, with multifaceted traits developed in their story lines.