Final answer:
Junior likely did not feel pure joy after the basketball game against the reservation team despite winning, due to complex emotions related to competing against a place with strong emotional ties, like a reservation.
Step-by-step explanation:
The question pertains to the character Junior in a story where he plays a basketball game against his former team on the reservation. Despite the victory, Junior doesn't feel pure joy. The likely reason for this mixed emotion is not listed among the provided choices, but it can be inferred from similar narrative contexts. Often in literature, a character may experience bittersweet feelings after a victory if it's against former friends or a place they have strong emotional ties to, such as a reservation. The win may evoke feelings of guilt or sadness for having to compete against loved ones, or it could be reflective of the complex relationship between personal achievement and communal loyalty.