I am pretty sure that it is b
Please write the paragraph for which you wanna know the answer....
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.
Youthful and chatty are connotative, Jump and Bark are denotative
