A researcher assesses the reading level of third-graders on the first of every month for three months prior to administering a new reading program and for three months following the program. This study is an example of a(n) .

Which of the following correctly describes a repurchase agreement? the sale of a security with a commitment to repurchase the same security at a specified future date and a designated price. the sale of a security with a commitment to repurchase the same security at a future date left unspecified, at a designated price. the purchase of a security with a commitment to purchase more of the same security at a specified future date.