When should complex sentences be used?

A) To express one main thought
B) To express a series of related subordinate clauses
C) To make a statement and ask a question
D) To express one main thought and one subordinate thought
E) To express one complex idea at a time

Complex Sentences

Sentences that contain one independent clause and at least one dependent clause, expressing more nuanced ideas.

Subordinate Clauses

Clauses that cannot stand alone as complete sentences and are dependent on a main clause to convey a complete thought.