Answer the following question given this paragraph: 

Plants also detect and respond to the daily cycle of light and darkness. For example, some plants open their leaves during the day to collect sunlight and then close their leaves at night to prevent water loss. Environmental stimuli that indicate changing seasons trigger other responses. Many plants respond to the days growing shorter in the fall by going dormant . They suspend growth and development in order to survive the extreme cold and dryness of winter. Dormancy ensures that seeds will germinate and plants will grow only when conditions are favorable.


Q: What do plants do to prevent water loss at night?

 Choices:

- close their stems

- shed their petals

- open their petals

- close their leaves

A:
close their leaves
