The definition would be C. signification
You don't have answers to choose from.
It would be A.
The incorrect contraction in that sentence is it's. It's is a contraction for it is, so it basically means : They're following the creek to it is source. This doesn't make sense. So, you would replace it with the other form, which is its. Its shows possession.
Hope this helps!
Answer: A, d i k e s
Hope this helps !!!
You are not that clear with the answer but i think the answer might be A
