Final answer:
To peruse something means to read it carefully, and a Jerry Garcia fan is known as a Deadhead, making 'Dead' the correct answer.
Step-by-step explanation:
To peruse a book or magazine refers to reading it carefully or at least skimming through it. A "Jerry Garcia fan" would likely be called a Deadhead, which is a term used to describe devoted fans of the band the Grateful Dead, which Jerry Garcia was a part of. Therefore, the correct answer is: B) Dead.