Respuesta :
The group of words stated above is a complete sentence. It has a subject and predicate. A sentence can be considered as complete when it expresses a complete thought. In this case, the sentence is independent and it can stand alone without the utilizing a subordinate clause.
Answer: D) Complete sentence.
Explanation: The given sentence ("it was a dark and stormy night") is an example of a complete sentence, because it has a subject ("It"), a verb ("was"), and complements ("a dark and stormy night"). Also, it isn't a subordinate clause, because it has complete meaning by itself (it doesn't depend on another clause). So the correct answer to the question is the corresponding to option D: complete sentence.