Which of the following books has won a Caldecott Medal for, "the most distinguished American picture book for children"?

The Caldecott is one of the most prestigious American children's book awards. The Randolph Caldecott Medal annually recognizes the preceding year's "most distinguished American picture book for children". It is awarded to the illustrator by the Association for Library Service to Children (ALSC). The artist must be a US citizen or resident and the illustrations must be original to the book, which must be published first or simultaneously in the US in English during the preceding year. It began awarding medals for 1937 publications. The first recipient was Dorothy Lathrop for her illustrations in, "Animals of the Bible".

Beside the Caldecott Medal, the committee awards a number of citations to worthy runners-up, called the Caldecott Honors or Caldecott Honor Books. The "Honor" was introduced in 1971. All of the incorrect options were Caldecott Honor Books.

"Finding Winnie: The True Story of the World's Most Famous Bear" (2016), was beautifully illustrated by Sophie Blackall. In 1914, veterinarian Harry Colebourn rides a train across Canada on his way to serve in World War I. Finding an orphaned bear on the platform of a Winnipeg railway station, he names it Winnipeg, "Winnie" for short. The bear becomes his regiment's mascot, but when the regiment moves to the front in France, Colebourn finds a home for Winnie at London Zoo. There the bear makes friends with a boy named Christopher Robin and inspires the story of Winnie-the-Pooh.