For 90.c I think is the correct answer
Listing your ideas in order to generate a topic for your writing is B. brainstorming.
You just think of as many ideas as you can in order to find the perfect one for your essay or whatever it is that you are writing. Eventually, you will come up with an idea.
They are different because they rarely happen and they are for different reasons .
Example : It's like seeing a rainbow , or finding a dollar on the sidewalk.
I really hope this helps
