What effect is created when she a writer forms a compound sentence that begins with an incomplete clause

When a writer uses a compound sentence that begins with an incomplete clause, he or she creates more suspense and mystery in the story. In this way, the writer captures the attention of the reader, because the incomplete clause creates questions that need to be answered and so the readers keep reading until they find answers to these questions. So, this technique engages the reader even more.

The answer is The pace of writing slows. (apex)