Answer:
The correct answer is c. Some fashion fads are not products of commercial brainwashing.
Explanation:
The determination of this option arises because the first one is contrary to the affirmation, that is to say, it is not determined and therefore it has no sense of denial in the face of the exposed; the second refers to subalternation and is also indeterminate, so the best of these options is the last, since it makes sense and specifically follows the rule of negation set forth in the statement.