Mustufa ran the 100-meter and 200-meter races (but the one he had trained for the hardest was the 400-meter competition).
This is the only answer that is grammatically correct. Parentheses cannot just be place anywhere in a sentence. They are used to add extra information for clarity or information that is an aside). An aside is something that is not the main part of the discussion. In this sentence, the main point is that Mustufa ran the sprint races. The extra information is that he trained for the mid-distance race.
When combined with interpretive typography and memorable imagery, words motivate people to action, and become a catalyst that lead to changed thinking in the mind, and speak hope to the heart of the listener.
Answer:
(D) "Cell phones will continue to become an even bigger part of our everyday life." is the correct answer
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