Answer: Editing
Explanation:
Pre-writing techniques are the techniques that can be used by someone before such person starts writing so that one can express himself or herself better and also have logical steps and ideas when writing.
Pre-writing techniques include brainstorming, freewriting, outlining, clustering etc. Freewriting is when one writes as the ideas comes into ones mind and the person doesn't mind the grammatical errors or punctuations.
It should be noted that editing is not a pre writing technique.