The best answer is mild. The relationship between the first pair of words, puzzled and confused, is that of synonyms—words that have similar meanings. Therefore, the second pair of words must also be synonyms. Mild is an synonym of gentle.
Yesterday's Analogy Quiz
Tomorrow's Analogy Quiz
About Infoplease, Part of Family Education Network
© 2000–2015 Sandbox Networks, Inc., publishing as Infoplease