3) swim faster than twenty-two miles an hour. 4) be ten feet long. B. Bottlenose dolphins DO NOT use echolocation to find out ... 1) how far the object is. 2) how big the object is. 3) where the object is. 4) how to get to the object. C. The mother dolphin and its baby were able to communicate with each other because 1) they were in the same tank. 2) they were relatives. 3) they used special equipment. 4) they were in Hawaii. D. We can learn that scientists ... 1) knew what the dolphins were talking about during the experiment. 2) want to know what dolphins talk about. 3) study only wild dolphins. 4) don't believe that they will learn to understand dolphins. E. Dolphins and people ... 1) are clever. 2) understand each other. 3) do not form groups. 4) breathe air under water.