"What does this paragraph mean?"
Translation:O que significa este parágrafo?
I do not have enough confidence to report this as a mistake on duo lingo's part, but is this answer really wrong?: "O que é que a signifíca deste parágrafo?".. I like the way the "correct" answer translates more easily into english but in everyday use, It seems like I have heard people use the phrase "o que é que" to mean "what is".
I'm sure you are right about that phrase. The book Modern Brazilian Portuguese Grammar (Whitlam, 2011) says:
In the spoken language, it is common to insert "é que" (literally, "is it that") after the question word, especially in the case of "o que" and "quando". In colloquial speech, "o que é que" is pronounced /kiki/.