WordPress 3.8 – Dashboard 1 Column Screen Options

With the new WordPress 3.8 under Screen Options they seem to have misplaced the “Columns” feature where you could put your widgets into 1 Column, 2 Columns, 3 Columns, or 4 Columns. My question is how to I force my Dashboard Widgets to only be 1 column, or in other words, take up the whole width of the screen versus just a portion of the screen?

How to Remove Certain Screen Options and Meta Boxes from add/edit post type?

Now, when you add or edit a particular post within your desired post type, there are more screen options as well. Although, these Screen Options are showing/hiding meta boxes. I would like to be able to programmatically obtain a list of all of these registered Screen Options of meta boxes, so that I can again check if a certain array of Screen Options exist, and if they do, I plan on removing them programmatically.