Final answer:
The sentence provided is a compound-complex sentence, which includes two independent clauses and one dependent clause.
Step-by-step explanation:
The sentence 'Because the high winds are blowing, the fire may spread rapidly, and we have been ordered to evacuate.' is an example of a compound-complex sentence. This type of sentence contains at least two independent clauses and one or more dependent clauses. In this sentence, 'the fire may spread rapidly' and 'we have been ordered to evacuate' are the two independent clauses, and 'Because the high winds are blowing' is the dependent clause.