(A) They don’t – they are purely for account managers to test what works.
(B) They are 5-day periods where there shouldn’t be any changes to the campaign budgets/bidding strategies while the algorithm adjusts to your campaign.
Conclusion
This question is a part of the SEMrush PPC Automation Certification Exam. You can find answers to all the questions asked in this exam in our SEMrush PPC Automation Exam Answers page.