You Move into a New House

Multiple Choice

You move into a new house.During the first summer you notice that many of the plants in the yard do not bloom.During the second summer the yard is a sea of blooms.In the spring of the third year, there are no plants.Which is the most likely explanation?

A) The plants are being affected by drought.
B) The nights are too long for the plants.
C) The plants are annuals.
D) The plants are perennials.
E) The plants are biennials.