choose the complex sentence.
a. the sky darkened, and the wind started to blow.
b. tammy called her dog, who was barking, but the dog never came.
c. the students became quiet when the principal walked into the room.
d. answering his cell phone, cal heard his sister’s voice on the other end.

Respuesta :

vaduz

Answer:

c. The students became quiet when the principal walked into the room.

Explanation:

A complex sentence is a sentence that has one independent clause and at least one dependent clause. An independent clause is a full sentence but a dependent clause needs an independent clause to be taken as a full sentence. Also, in a complex sentence, the dependent clause has to start with a subordinating conjunction.

Among the given sentences, sentence c is a complex sentence as it contains the subordinating conjunction "when". It also has one independent clause with a dependent clause.

Thus, the correct answer is option c.