Every decision involves some element of risk. You will always have some amount of time to act on the issue. Over the period you will develop an attitude and ability to recognize and take calculated risks. If you have done it in your career then you will be able to answer. If you have not then you can mention the following ways to take the decisions - Act quickly and find what information is missing and who can give you answers quickly - after you make the decision develop a contingency plan asap - quickly identify few pros and cons and their risks - what is the worst thing that could happen, evaluate its impact on you and your organization.