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.
Technology is a modern day gift, but it can also be a curse. Depending on how users utilize tech to their advantage, their actions can either push society forward or create a negative impact. For example, tech has provided cars, factory machinery, more efficient communication, a stunning method of planetary exploration, and a multitude of other things. However, people with malicious intent can use tech as means of cyber bullying, fraud, hacking and stealing people's information, pedophilia, and an unhealthy amount of exposure to the world for younger children. Tech has many benefits, but also many setbacks, it just depends on how people use it.
5. The brown horse and I came to a metal stairway
<span>Pamper and spoil are synonyms. A synonym is a word or phrase that means exactly or nearly the same as another word or phrase in the same language.</span>