Complete the summary by choosing one sentence ( A, B, C or D ) that is among the most important information to fill in the blank.   SUMMARY:  This passage discusses the behavior of cicadas A cicada invasion involves a large number of insects over a wide area. ________ Cicadas spend most of their lives underground as nymphs.
A.The invasion zone covers most of the eastern  United States
B.The insects emerge every 13 to 17 years quickly mature  and reproduce
C. Cicadas are small and black transparent wings
D.The invasion will last only a few days

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