The correct answer is option A: There is no single topic sentence. A topic sentence captures the main idea of a paragraph or group of sentences. It can be placed anywhere in the text but most of the times, it is usually placed at the beginning of a paragraph. In this paragraph, there is no topic sentence that explains what the paragraph is about.
That would be a practical exercise. Practical means the actual doing or use of something rather than with theory and ideas. So it would apply to real life situations.
