Which of the following is a compound sentence?
OTwo goblins shouted "Trick or Treat!” as I opened the door.
O I opened the front door with a big bowl of candy bars in one hand.
O I got up and answered the door, but when I opened it, there was no one there.
O I thought I heard the doorbell, but it was coming from the TV.

The compound sentence from the given options is given in choice (c) or (iii): " I got up and answered the door, but when I opened it, there was no one there."

What is a compound sentence?

Compound and complicated sentence components are combined in a compound-complex sentence. It is the most complex sentence structure you may employ. You can increase the level of complexity in your writing by learning how to create compound-complex sentences.

A compound sentence is one that consists of two or more independent clauses connected together, most frequently, by a conjunction such as;

For
And
Nor
But
Or
Yet
So
Comma
Semicolon

There are no dependent clauses in a compound sentence. A clause is a set of words in grammar that consists of a subject and a predicate.

Therefore, in this sentence " got up and answered the door, but when I opened it, there was no one there," the word "but" is the joining method. Hence, option (c) is the correct answer.

Check out the link below to learn more about compound sentences;

https://brainly.com/question/404087

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