I believe it's C. But don't take my word for it, it's just what I think it is but it would be wrong.
"If they are used ocassionally, antiacids don't produce any risk. But used daily, they can cause a "rebound" reaction: heartburn pain can actually worsen and some people experience diarrhea or constipation from certain antiacids."
Brainstorming is the correct answer.
Brainstorming is a prewriting technique used in order to gather as many ideas and information as possible to speed up the writing process. Among the brainstorming strategies, we have listing, clustering, looping and freewriting. Julia used the listing strategy where she lists as many daily tasks as she can so she can narrow down the options and then add more details to it in her writing.
