Final answer:
The sentence with two independent clauses is "I rushed to the store, but arrived too late," which is a compound sentence joined by the conjunction "but."
Step-by-step explanation:
The sentence that contains two independent clauses is "I rushed to the store, but arrived too late." Both clauses in this sentence can stand alone as complete sentences, and they are joined together by the coordinating conjunction "but." This makes the sentence a compound sentence, which combines two or more independent clauses. An independent clause is essentially a group of words that contains a subject and a verb and can stand alone as a complete sentence. An example of a compound sentence is "It rained heavily during the afternoon; however, we still managed to have a picnic." In this case, the two independent clauses are joined by a semicolon and a conjunctive adverb "however."