(A) Use maximum and minimum CPC limits or bid estimates
(B) Set up a bid strategy and forget about it
(C) Use all bidding strategies all of the time
(D) Monitor performance at least once per week
The best practices for using automated rules are (1) Use bid estimates provided by Microsoft advertising to set a maximum and minimum CPC bid limit. This helps you to spend less than what is required to get to the top positions of the search engine results. (2) Automated rules help you to monitor performance at least once per week. This helps you to check your ad clicks, conversion, etc. and the budget you have left remaining.
This question is a part of the Microsoft Advertising Certified Professional exam. You can find all the answers with detailed explanation for this exam in the Microsoft Advertising Certified Professional exam page.