Answer:
Surrealism officially began with Dadaist writer André Breton’s 1924. Surrealist manifesto, but the movement formed as early as 1917, inspired by the paintings of Giorgio de Chirico, who captured street locations with a hallucinatory quality.
Explanation: I hope this helps buddy. But this is History you're talking about, so make sure you put it in History and not Science :)
Answer: Option 2: Stubby was a stray that had proved himself in battle.
Explanation: It makes the most sence based on the short story. Also they asked why they took him on the battlefield, not why the kept him in general.