You can use the Microsoft Advertising Keyword Planner to get the search volume data and suggested bids data for keywords from the last 6 months. This historical data can be used to improve your bidding strategy. You can find keywords that had a high search volume and suggested bid in the last 6 months and you can use that data to increase your bids for that keyword. You can also filter out keywords that had low search volume and suggested bids.
This question is a part of the Microsoft Advertising Certified Professional exam. You can find all the answers with full explanation for this exam in our Microsoft Advertising Certified Professional Exam Answers page.