Ah Ha now I understand.
The company is asking you if you want the images printed as you send them. i.e if the colours not right, it's your problem, or do you want them to correct them to what they think is the colour balance that will please.
If you have a calibrated system and know that what you see on your screen is what comes back, then opt for No Correction. otherwise it's up to you. If you are not using a calibrated system go for the Colour Corrected option and see what comes back. If you don't like them you can then always ask for reprints!!