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.
Answer:
I understand your point completely, but Brainly only wants you to pay for their stuff because this is a free company for us, however, not for them. They have to pay for their company. Sounds silly, right? Still having to pay money for a free company? Unfortunately, it just has to be that way.
'Oath of the horatii' is the painting that convey a call to revolutionary action! XD hope this helps!