Read the text below. For questions choose the correct answer. 
 
Bottlenose Dolphin
 
Bottlenose dolphins send messages to one in different ways. They squeak and whistle and use body language. Dolphins also produce frequency clicks, which act as a sonar system telling the shape, size, speed, distance, and location of the object. They also have a sharp sense of hearing. Scientists believe that the sounds travel through the lower jaw to its inner ear and then   to the brain for analysis.
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