What decision led to the biggest payoff? What decision had the impact on the largest number of people? What decision led to a culture change or major process change? These questions will help lead you to determine your most significant decision in the past year. Once you know your most significant decision, provide the interviewer with an overview of the decision you had to make. Discuss why the decision needed to be made, the pros and cons of a few possible outcomes, and what decision you ultimately made. Next, share how your decision played out highlighting the positive results from the decision you made.