Question

1. which sentence correctly combines the ideas into a compound - complex sentence? \my dog barked. the mail arrived. he ran to the door.\ my dog barked when the mail arrived. my dog barked and ran to the door. my dog barked when the mail arrived, and he ran to the door. my dog barked, the mail arrived, he ran to the door.

Explanation:

A compound - complex sentence has at least two independent clauses and at least one dependent clause. "My dog barked when the mail arrived, and he ran to the door" has the independent clauses "My dog barked" and "he ran to the door", and the dependent clause "when the mail arrived". The first option is a complex sentence, the second is a simple sentence with a compound verb, and the fourth is a run - on sentence.

Answer:

My dog barked when the mail arrived, and he ran to the door.