Match the Following Purposes of a Literature Review with the Example

Match the following purposes of a literature review with the example that illustrates that purpose.
-Delimiting the research problem

A) A researcher identifies attempted programs that were unsuccessful in reducing dropout rates.
B) A researcher explores suggestions that other researchers have posed to determine the best ways to keep students in school until graduation.
C) A researcher identifies all the major lines of inquiry that have been pursued in the field of dropout prevention.
D) A researcher develops a conceptual model to explain his discovery that dropouts tend to leave school because they had a compelling, time-intensive interest in some out-of-school activity.
E) A researcher speculates about the possible value of an approach to dropout prevention that has not been previously tried.
F) A researcher examines the literature on dropout prevention programs to determine how student satisfaction with such programs was measured.