This question tells you the company is looking for team players and forward-thinking people, you can use this knowledge in your answer.
Use a real-life example of when you put a suggestion forward, the situation, how it developed and the outcome.
Work-related experiences work best here.
“In my previous company, the management team was asked to suggest ideas how we could break a new policy to the workforce, that long term would save jobs but the short term could potentially upset some of the workforces. As a team, we discussed several ideas and I personally suggested the idea that was used, with great success”
The interview will be intrigued with the ending of this answer and will most defiantly probe you further.