The right answer is D “Grampa is surprised by Birdfoot's ignorance.” The poem is about an old man who stops the car many times, in each he scoops toads off the road to save them. The speaker insists on what the old man is trying to do is impossible so they should keep going. But he doesn’t mind and keeps on saving the toads. Therefore, in the excerpt the old man smiles after his grandson complain, because he thinks the toads are in a hurry and have things to do like them, humans. The poem talks about the importance and value of every life.