The word "realization" ( Line 5, Para. 1 ) is closest in meaing to ______.

A．Difficulties of writing satiric literature.
B．Popular topics of satire.
C．New philosophies emerging from satiric literature.
D．Reasons for the popularity of satire.

A．They are famous examples of satiric literature.
B．They present common sense solutions to problems.
C．They are appropriate for readers of all ages.
D．They are books with similar stories.