Contract in colours: black and white = lack of movement, frozen. Coloured = free flowing movement in the blend of colours.
I would say that the parallel list here is C) a lost puppy, a colored poster, and a happy boy.
This is because all words have an article <em>a, </em>and an adjective in front of them, so they are parallel.
The answer is A. Hope this helps! (:
1. Use proper grammar, punctuation and avoid slang
2. When greeting, don't say "hey" or "what's up". Instead, go with "good -insert time of day-"
3. When writing text messages make sure they stay a good and appropriate length.
4. For gods sake please please never say lol or anything of the sort
please