Final answer:
Kurtis suggests the narrator as captain because he sees the narrator as the best choice based on his contributions and abilities, not due to favoritism or friendship.
Step-by-step explanation:
In section 15, Kurtis says that the narrator should be captain because, after listening to the narrator and seeing the narrator's list, Kurtis thinks the narrator is the best choice for captain. This is option c). It is not because the coach preferred the narrator, Kurtis was tired of discussions, or because Kurtis and the narrator were best friends - these are options a), b), and d), respectively. The evidence provided shows that the decision was based on a rational consideration of the narrator's abilities and contributions to the team.