Why do most speakers usually repeat or paraphrase the question before giving the answer?

A、Itgivesthespeakertimetoreadbetweenthelinessoastototallyunderstandthequestion.
B、Itgivesthespeakertimetofigureoutwhatanswertheaudienceexpect.
C、Itcanhelptomakesurethattheaudiencegetandunderstandthequestion.
D、Itcanhelptomakethepresentationlastalittlelonger.