The answer is "He's sane."
"True - nervous - very, very dreadfully nervous had I been and am; but why will you say that I am mad? The disease had sharpened my senses not destroyed not build them. Above all was the sense of hearing acute. I heard all things in the heaven and the earth I heard many things in hell. How, then, am I mad? Harken! and observe how healthily - how calmly I can tell you the whole story."
Although he is mentally ill, he claims to be sane.
It is Probably the 3rd one or the second one
An arms race is a situation in which two or more countries or groups of countries are continually trying to get more weapons and better weapons then the other groups in case of a possible attack.
An arms race
I read a book "drought" , this book was actually based on how we people waste the water these days and people far away suffer from lack of water to drink . author was unknown because story was based in reality and was conflicted too for some reasons . this book was published in may 19 2006 . this book was an absolute master peace . I learned a lot from this particular book and wow ! it's seriously so pain to even know such situations . there a girl was described who used to go for bringing water , walking miles a day with her mom , she had to cross huge ups and downs and while going her mom felled down from the hill . and the girl died crying , starving alone . It basically described various scenarios . and while reading I realised what actually the struggle is . we cry for such low priced cheap ,things and they are super heroes struggling for every drop of water . The book was actually priceless if we think of . but it costed me of 1.33$ . whatever be it I liked it the most . it was like experiencing things in real life . and after the book was over , my throat was dried and paining with sorrow . since then I respect things which surrounds me .