I believe "the messages the piece communicates"
Answer:
money can or cannot buy happyiness because it can buy you anything you want buy people be wanting more
Explanation:
it's up to the person and what they like
Yhhhh what???? girl what r u asking
"the book that I liked best" is the complete subject clause because it replaces the subject (the proof is that it agrees with the verb was). The adjectival clause is then "the one about the big fish" because it describes the subject in more detail (which is always the function of the adjective).