Why does the writer add the information in square...

Câu hỏi: Why does the writer add the information in square brackets in paragraph 4?

A because, although they are not part of the original quote, the additional information given is necessary to understand the statement

B because the writer wants to emphasize the meaning of these words

C because the quote is from a second language user whose command of English is not perfect

D because the writer is quoting from another source