The correct answer is parentheses.
When you are quoting somebody's words, first you are going to use the quotation marks ("), then cite the quotation, write a period, and close the quotation with the marks again. In order to avoid plagiarism, you have to cite your sources. This means that you need to use the parentheses, where you are going to write where you took that citation from.
For example:
<em>What characterizes romantic poetry is the "spontaneous overflow of powerful feelings" (Wordsworth 263).</em>
As you can see, the source (Wordsworth) is written in the parentheses, along with the page number.
I believe it means to write what the quote means by analyzing its aspects and using certain elements of literature, details. I see why you are confused. I would be too tbh
Structure: Last, First M. “Article Title.” Magazine<span> Title Date Month Year Published: Page(s). Print.</span>
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.