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Which of the following is an example of an organism responding to a stimulus?
a.After you throw wood onto a fire, the fire flares up.
b.A tree that has died and fallen down slowly decays over time.
c.When you walk from a dark room into the sunlight, your pupils get smaller and your eyes adjust.
d.When a boulder falls into a river, water splashes up onto the shore.
What is C. When you walk from a dark room into the sunlight, your pupils get smaller and your eyes adjust.