I believe A would be the best way to keep the original meaning while making it simple to understand.
I would say that a flare is the least like the others, considering that it doesn't have a bulb, whereas the other options do, and it is fired in the air, whereas the other options are not thrown and ejected.
The dog is a survivor and he instinctively knows that in a contest with Nature as the opponent, one must use one's survival skills to live. The man, a greenhorn, has no survival skills at all.
What is the question? I'm not sure whT you're asking but all of those facts are true.
