When Students Summarize Material They Are Studying, They Learn It

When students summarize material they are studying, they learn it more thoroughly. Which one of these students is most effectively summarizing?

A) Jerry writes down the important ideas and identifies relationships among them.
B) Laura writes down everything she can remember from the lesson.
C) Nora writes each main point on a separate index card and then jots down all the details she can remember about each one.
D) Phyllis lists the general themes of a lesson in five or six words.