The response that BEST completes the R.A.C.E strategy for the given prompt is:
"Writers develop their narratives by using pacing and description. The pacing is the speed at which a story unfolds, and description is the words or phrases used to describe the characteristics of story elements. Description allows vivid details, and this is helpful for readers to visualize the story. Both of these tools help writers bring their writing to life."
Analysis: This response effectively Restates the prompt by addressing how writers develop their narratives. It Answers the question by naming pacing and description as key elements. It Cites evidence by explaining what pacing and description mean and how they function in storytelling. Finally, it Explains the importance of these tools by highlighting how they enhance visualization and engagement for readers, thus fulfilling the requirements of the R.A.C.E strategy comprehensively. The other responses lack this depth and clarity in explanation and evidence.