Which Configuration Flow would you choose to design a Configurator where attributes vary based on prior user selections and have a sequential relationship consisting of distinct steps?

A client wants customers to be able to select a laptop category from a drop-down list in the Product Configuration section. After the laptop category is selected, all laptops within that category need to be displayed without the user having to do any more selections.
Which option meets this requirement?

Given the following code:

Which function, when filled in the blank, will return a value of 1?

What would you do if a partner organization is no longer needed and the access of all users needs to be removed?

What standard functionality would you use to align attribute labels on a configuration screen so that they are evenly distributed vertically?