Over time, a plant pollinated by a hummingbird has developed very long, tube-like flowers. Why might the flower have adapted in this way?
A)The longer, tube-shaped flowers probably developed to keep the hummingbird from reaching and drinking the flower's nectar.
B)The longer, tube-shaped flowers probably developed so that the hummingbird must stick its head in the flower to drink the nectar.
C)The longer, tube-shaped flowers probably developed so that pollen would not fall into them as a hummingbird flies past.
D)The longer, tube-shaped flowers probably developed so that hummingbirds could land on them.(I PICK THIS)