Which statement illustrates proper coordination in sentence construction?

The choice that illustrates proper coordination in sentence construction is the one that uses a coordinating conjunction to connect two independent clauses effectively. In this case, the statement correctly combines cause and effect: "There was a big fire at our house" and "we moved into a hotel while the house was being fixed." By using "so," it indicates that the second clause is a direct result of the first, clarifying the relationship between the events clearly and maintain the flow of thought.

This coordination helps the reader understand that the action of moving into a hotel occurred as a consequence of the fire and is presented in a grammatically correct and cohesive manner. The use of "so" is particularly effective here because it emphasizes the causal relationship between the two independent clauses, enriching the overall meaning of the sentence.