How to reformat mac book pro

I'm having issues trying to reformat my mac book pro. I looked and followed the info on the steps shown in a prior thread. but the selections are shaded and does not allow me to select anything but repair or make a copy to a disc.
p

Install or Reinstall Mavericks, Mountain Lion, or Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
OS X Mavericks- Erase and reinstall OS X
OS X Mountain Lion- Erase and reinstall OS X
OS X Lion- Erase and reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.

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      3. Select the Destination volume from the left side dropdown menu.
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    Message was edited by: darnelld

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    Cheers
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    Message was edited by: Rod Hagen

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