Emma is trying to get her 3-year-old daughter to stop crying when it is time for bed. She wants to reinforce her for not crying. Which of the following would best serve as a successful reinforcer for Emma's daughter?
Select one:
O a. reading a book of her choice while she is in bed
O b. promising to take her to Florida next spring
O c. money
O d. letting her stay up later when she doesn't cry