Answer:
A. Writing topic sentences and choosing supporting ideas
Step-by-step explanation:
We can look through the options and see which one most applies.
✓ A. Writing topic sentences and choosing supporting ideas
[] This is a good answer. When prewriting you want to have a clear topic picked out as well as some details to support that topic. This will make the actual writing process much smoother.
B. Thinking and planning
[] While this is true, what are you thinking about? You are thinking about option A, what to write for topic sentences as well as choosing supporting ideas
C. Checking punctuation and correcting spelling
[] This step is used after you have written your piece, so it does not apply to prewriting.
Writing topic sentences and choosing supporting ideas are the main elements of prewriting.