Answer:
C. 85
Explanation:
The question is asking how many stickers Bill had to start with, before he had sold anything. Since Bill sold 36 stickers and 23 stickers over the next two days, we must add them together, giving us 59 stickers. After the two days of selling 59 stickers total, Bill had 26 stickers remaining, so we must add them together to get what he started with, leaving us with 85 stickers as the answer.