Having a option with civil engineering

[a_man]

Okay, I go to school at University of Waterloo in Canada.

I was wondering what is it like to have an option (This is kind like studying minor)

I want to do a minor but cannot really decide which one I want.

I heard that civil engineers are overpopulated, so waht are the things. I can do to makeself more valuable ?

Like what can i expect to do in company if I have an option in statistic, biomechanic, or international studies ?

Any suggestion related to civil engineering would be a great help