Respuesta :
This whole sentence is C. complex, because it contains one independent clause, and two dependent ones.
A compound-complex sentence has two independent clauses, and at least one dependent one. A simple clause has only one independent clause. A compound clause has two independent clauses at least, with no dependent ones.
A compound-complex sentence has two independent clauses, and at least one dependent one. A simple clause has only one independent clause. A compound clause has two independent clauses at least, with no dependent ones.