The answer is letter A. You're generating words that suggest possible sentences or paragraphs.
It is not
chronological or suggests possible themes. Clustering only happens when there
is a theme already. When in clustering, thoughts are tumbled out, enlarging
vocabulary word bank and enabling to see patterns of ideas. It may be done
individually or by class.
Clustering is akin to
brainstorming. It is an activity wherein ideas, images, and feelings are
generated around a stimulus.