Extrinsic motivation refers to behavior that is driven by external rewards such as fame, money, praise, and awards. In this case, the statement that best expresses the daughter's extrinsic motivation is "All day I have no time do nothing but dust off her winnings." This sentence suggests that the daughter is motivated to play chess and win trophies, which are external rewards. The other sentences do not directly point to any form of extrinsic motivation.