Which option describes a complex sentence?

Question

a sentence that contains two or more independent clauses joined with a comma and a conjunction
a sentence that contains two or more independent clauses joined with a comma and a conjunction

a sentence that contains one independent clause and at least one dependent clause
a sentence that contains one independent clause and at least one dependent clause

a sentence that contains at least two independent clauses and at least one dependent clause
a sentence that contains at least two independent clauses and at least one dependent clause

a sentence that contains a subject and a verb and expresses a complete thought

Answer 1

a sentence that contains at least two independent clauses and at least one dependent clause