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DIRECTIONS: In each of the following paragraph, a part of sentence is left unfinished. Beneath each sentence, four different ways of completing the sentence are indicated choose the best alterative among the four. People believe that cellphones cause cancer, especially brain cancer. A few studies suggested a link with certain rare types of brain tumours __________. These studies didn't receive front-page coverage. Therefore, most consumers could not notice them.

A) Using a cell phone while driving increases the risk of having a car accident

B) Keeping your hands free and your eyes on the road is a more significant issue

C) Lower frequency radiation has not been proven to cause these DNA changes

D) But most studies show that there is no link between cell phone use and brain cancer