What is the structure of this sentence?
farley mowat, a canadian, has written a book that says vikings were not the first europeans.
a.
compound
b.
complex
c.
compound-complex
d.
simple

The correct answer is C. compound-complex. A compound-complex sentence consists of more than independent clauses with atleast one subordinate clause. The independent clauses are: Farley Mowat has written a book and Vikings were not the first Europeans. The subordinate clause is "a Canadian".