9. Which statement is a complex sentence? Snow and ice typically lead to school and business closures in this area. It snows often here in the highest mountain range east of the Rockies. City schools have fewer snow days, but their summer breaks start sooner. When it snows this hard, most schools in the area close for the day.

The correct answer is: When it snows this hard, most schools in the area close for the day.<br /><br />A complex sentence is a sentence that contains an independent clause and at least one dependent clause. In this case, "When it snows this hard" is the dependent clause, and "most schools in the area close for the day" is the independent clause.