The ACT is full of questions concerning the necessity and placement of commas. It wants to know whether you are aware that commas are not about pauses but about clauses. If, a, comma, was, just, about, pauses, then, we, could, put, them, anywhere. A pause in a sentence is often a matter of personal preference; it is a matter of what you might intend to emphasise. This is a part of speech; it is not a part of grammar. There are rules concerning the placement of commas; a comma is not a pawn in the game of the sentence.
Lesson one: Commas possess culture. Please use them with care.
Contact us here for more info about ACT prep with Essai.