Mary was walking in a grass field and accidentally stepped on a mimosa plant. She noticed that the leaves of the mimosa plant closed up immediately. What does this tell you about the mimosa plant?

• A.  The mimosa plant is a non-poisonous plant.
• B.  The mimosa plant responds to touch.
• C.  The mimosa plant is a poisonous plant.
• D.  The mimosa plant responds to sunlight.