The best answer to the question of which is a simple sentence is option C, which conveys a complete thought with one subject and predicate. Other options either contain dependent clauses or multiple independent clauses. Therefore, option C meets the criteria of a simple sentence. ;
After analyzing the options, none of them strictly meet the criteria for a simple sentence. However, option C is the closest to expressing a complete thought as a complex sentence. A simple sentence typically has one independent clause without dependent clauses.
;