My guess is that it's probably the 2nd option on the Adobe Install where it says

Step 1
Select an operating system
Just click on that little downward arrow and

if it's the 2nd Option then just click that

Then go to

Step 2
Select a version (of Adobe Flash)

If you are using Firefox or something other than Internet Explorer,
Click Flash Player 12 for other browsers

If you are using Internet Explorer
Click that

Unclick any OPTIONAL OFFERS

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