Recall a time when you had to choose between a variety of things, ranging from great to small. Some gave immediate short-term rewards while the most desired required patience and determination to accomplish.
Perhaps you wanted a forbidden soda and a candy bar of your own. What went through your mind as you stood before the range of possibilities? What did you choose and why? As you ate and drank, what sensations did you experience? And when you were finished, were you satisfied? If so, why?
Now think of something you wanted as an adult. A new car? Hybrid or electric? Automatic or manual? Sedan or SUV? What research did you do before making a decision? What factors influenced the vehicle that you chose? Once you drove it off the lot, what emotions arose? Were you satisfied with your decision?
Your characters make great decisions as well. The things they want depend upon personality, socioeconomic status and need.
Your task is to write a scene in which the readers will see the entire story from beginning to end. Because this could easily become narrative, the challenge is to bring the process alive through dialogue and action. Tension must also come to play in order to prevent the story from being flat.
Have fun with this one.