Career Crisis, How to solve it?

Can somebody advice me on how to solve this pretty hard problem of mine? Just yesterday I applied for a job as a civil engineer, and I underwent three interviews in a real estates company. The persons who interviewed me seems like assessing to what department or specific job they will put me up. Afterward, the last interviewer told me that they will be rerouting me to the other department heads because they can't easily decide on where to place me. They keep on asking me if what specific job in civil engineering do I like the most, but I can't directly answer their question because I'm kind of can't assess myself fairly on where do I excel the most.I'm just a fresh graduate of civil engineering, who just got my license a few months ago and with little experience on a consultancy firm. If you're aware, civil engineering is a diverse field. A civil engineer can do structural designs, quantity and cost surveys, hydraulics, geotechnical engineering, construction project management, roads and highways to name a few. My belief is that I think I can excel in any job with proper training and guidance but I think I should be able to decide on what specific niche should I take. So can anyone please help me how to fairly assess myself on what niche in my field should I take? Or if you're in my case what would you do? Thanks.