Answer the question. Although sound is something that is important in our daily lives, noise is not. The sound that is unpleasant for the ears is noise. Noise pollution generally happens with normal activities, for example, speaking or sleeping. This type of pollution can also reduce the quality of life. Noise pollution is not the problem only for people, it is also harmful for the world's whale population. These mammals use their ears more than their eyes. They make sounds. They need to do this to communicate, in much the same way as humans need to. It also helps them prevent from becoming lost during migration. However, with today's heavy, and regular ship traffic, these majestic creatures are suffering. Choose the most appropriate title for the text.
а) Noise pollution is a serious problem
b) All types of sound are harmful for health
c) Whales are suffering from noise pollution
d) Communication via sound is very important​