Which of the following is an example of a compound sentence?

A compound sentence is defined as a sentence that contains at least two independent clauses joined by a coordinating conjunction (such as "and," "but," or "or"). In this case, the best option illustrating a compound sentence is one that demonstrates the combination of two independent actions or thoughts.

The correct choice presents a sentence structure that includes “Myrtle drove to the store” as one independent clause and “Calvin bought a soda” as another independent clause, connected by the coordinating conjunction "and." This shows that both actions are equally important and are performed by different subjects. The use of "and" effectively combines the two independent clauses to form a single compound sentence.

In contrast, the other options present only simple sentences, with each option containing only one independent clause and no conjunctions to link multiple thoughts together. Therefore, option A successfully meets the criteria for a compound sentence by incorporating multiple independent clauses.