• To create an optimized copy of your existing campaign, so that it can be tested with the drafts and experiments tool
• To determine which Google Ads features should be enabled to get the best performance from your campaigns
• To analyze the search term report and add both keywords and negative keywords, depending on historical performance
• To improve return on investment so you can drive more conversions within your target CPA (cost-per-acquisition)

Answer: D / To improve return on investment so you can drive more conversions within your target CPA (cost-per-acquisition)