Answer: When he kills Bob, Johnny loses the look of a wild animal caught in a trap and instead he "looked as cool as Darry ever had." By killing Bob, Johnny takes control of his life in the only way that he thinks is possible
The correct answer is a.: specific.
This structure (this +adj) requires an adjective and the only adjective is in a., the other options are verbs or nouns and are not correct.
Five sources for informational text or research material are:
1) Books
2) Periodicals & Newspapers
3) Reliable Articles (both written or internet) that are not always one-sided
4) Documentaries
5) Historical records
its b the word mew creates a sympathetic tone.