This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to organize a basement
Begin by distinguishing between what you want to keep and what you can eliminate.
You have to be honest with yourself during this process. Many people opt to keep things with the intention of using them, even though they have not used them in years.

Available options:
(a). However, forming a wall can help you to decide what you will be keeping and retaining. Know that what you want to keep is yours, not anybody else's..
(b). As a rule, it is better to keep things as simple as possible. Going back and forth between how you want to organize your basement, and where you want to put items, is not good enough..
(c). If you really want to keep something, make a solid plan as to when you will use it. If you cannot come up with one, let it go..
(d). For some people, you may want to keep certain things, such as clothing or canned goods, as a main space, but for others, you can easily sort through and eliminate material items. However, make sure you ensure that what you plan to store will function comfortably and reasonably..
The answer is:
(c).