While it was yet dark a great strange cry rang out in the churchyard.

A. Simple
B. Compound-Complex
C. Compound
D. Complex
I know 100% that it isn't simple. I think it is C though. Am I right?

4 answers

No, not C ... and you're right that it's not A either.

http://www2.ivcc.edu/rambo/eng1001/sentences.htm
No. A compound sentence has two independent clauses.
So is it D?
Yes, D