Which statement is a complex sentence?

It snows often here in the highest mountain range east of the Rockies.

When it snows this hard, most schools in the area close for the day.

Snow and ice typically lead to school and business closures in this area.

City schools have fewer snow days, but their summer breaks start sooner.

1 answer

The statement that is a complex sentence is:

"When it snows this hard, most schools in the area close for the day."

This sentence consists of an independent clause ("most schools in the area close for the day") and a dependent clause ("When it snows this hard"), which makes it a complex sentence.