Members of a certain insect species show a massive increase in population during the rainy season,decrease in number as winter approaches,and disappear by the end of winter. What does this indicate?

  • A
    The host plant matures and dies at the end of the monsoon season.
  • B
    The population growth curve is of the $J$-type.
  • C
    The number of their predators increases significantly.
  • D
    The insects exhibit an $S$-shaped growth curve.

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