”To keep one‘s temper“ is an example of an idiom. This means to stay calm and collected to not get angry. For example, the boy was about to lose his marbles but then his brother claimed him down. I used another idion in the sentence which is “lose his marbles.” That means that the boy was about to crazy/insane.
The answer is C) because it was quoted in the article. When a writer uses another article for their work they cite (put in quotations) the title of the article and anything they used from it or it will be plagiarizing
