I believe that C is the best answer. A and D are out easy beacuse they don't go well with the plot and B is incorrect because it mentions too much about Spike and not about Mikkel's own passion to become a DJ while still telling how he got the equipment.
At the end of her article, Patricia Fripp closes with Be gracious. Be modest. Be c) prepared.
Answer: (of a person or action) lacking good sense or judgment; unwise.