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.
Answer:
B, Hector boasts when he kills Patroclus.
Explanation
I took the test
And idea or meaning that is unclear.
( hope this helps! <3 )