"depend primarily on" is the key here. Get rid of "should" because it only serves to confuse.

Let's use X to represent "tariff classification of an item", and Y to represent "how the item is marketed".

So you have: X "depend(s) primarily on" Y. Let's break it down.

X depends on Y. This means that in order to have X (necessary condition), you need Y (sufficient condition).

So, Y ---> X.

"How the item is marketed" -----> "tariff classification of an item".

How the item is marketed primarily determines the tariff classification of an item.

Also, TAKE A BREAK. You aren't retaining any new information after hour 7, you're just tiring yourself out. Go eat a banana and sit outside for a while. Come back tomorrow and everything that seemed utterly confusing today will look so much clearer. Xx

/lazy ----> /him

him ----> lazy.

Dont panic!!! I can't imagine any scenario in which this counts against you. The fact that you finished the incompletes makes them COMPLETE! If they aren't on your transcript you have no need to worry. Congrats on getting it all done!!