A plant in the classroom is wilting. The children are asked to come up with as many possible explanations for this as they can. They are engaged in the second stage of decision making, called
How does your book define and label the second stage? Here are variations on this subject.
http://www.decision-making-confidence.com/stages-in-decision-making.html
http://blog.majoriumbusinesspress.com/2011/10/27/the-four-stages-of-effective-decision-making/
http://en.wikipedia.org/wiki/File:Simons_3_stages_in_Decision_Making.gif