Which of the following sentences contains a sentence fragment?

The correct answer to the question "Which of the following sentences contains a sentence fragment?" is Option A: She studied for hours. And passed the exam with flying colors..

The other options — B) Despite the heavy rain, the children played happily outdoors., C) The old house stood empty, its windows like vacant eyes., D) He arrived late, but the meeting had not yet begun. — are incorrect for this CLEP Exam Prep question. As explained above: Option A contains a sentence fragment. 'And passed the exam with flying colors' lacks a subject and cannot stand alone as a complete thought, making it dependent on the preceding sentence.