Question

what is defined as generating ideas by writing down everything that comes to mind on a subject. A. Mindfulness B. Reviewing C. Brainstorming D. Research

Answer 1

c brainstorming
when think of something and write down every thing that comes to mind

Answer 2

You could call it Brainstroming or taking notes on your ideas. Research is looking up ideas or seeing if those ideas could work, reviewing is exactly the name, mindfulness is being aware of your state of being and mind, so probably C.

If I am correct. Hope that helps.