单项选择题

Questions 5 to 7 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now listen to the conversation.
According to the man, there’s more motive to tackle tasks if they are ______.

A. put on several cards and read through every day
B. kept in front of the woman while she is studying
C. divided into small ones and distributed to specific days
D. sorted out from the material which should be reviewed