I am pretty sure that it is C.
Based on that the use of foreboding in this sentence is used as a noun, the definition of foreboding would be:
A feeling or sense that something bad is going to happen.
I believe the answer would be C because that is what there solution is to do.
Yes time does change but over time you start changing things
A-2, B-1, C-4, D-3 (I think) Hope I helped!