Delete a Gmail Account

I created a gmail account a couple of years ago and love it. I have since created additional accounts for my wife and kids. Altogether we have about 8 different emails each with different screen names of course. I want to cancel (delete) one of them but keep all the rest of our emails. I'm a bit nervous because it gives me two choices when canceling or deleting: Delete a Product (Remove Gmail Permanently) or Delete Account (Close account and delete all service and info associated with it.) I just want to permanently delete the one email address without affecting any of the other gmails (email addresses.) What should I do? Thank you so much.