B, he is showing he knows he's getting better becoming more hopeful
We don't have any proof that he or his own child got poliomyelitis as an infant. Also, this disease has been a serious issue <em>before </em>he became a doctor, so 2 is out also.
This only leaves one answer left. =)
Answer:
3. He will riding a horse.
4. He helped his father in his work.
First answer to the first question will be a. an art show. Second answer will be b. It comes from a Latin word meaning "sand." Third answer is b. Christine.