Which is a complex sentence?

Question

*
1 point
I read a book.
I read a book, and my sister played outside.
Although it was cold, we went for a walk.
The sun was shining

Answer 1

The complex sentence from the options provided is:

Although it was cold, we went for a walk.

A complex sentence contains at least one independent clause and one dependent clause. In this case, "Although it was cold" is the dependent clause, while "we went for a walk" is the independent clause.