- 2 weeks
- 3 months
- 1 week
- 3-4 weeks
The correct answer is: 3-4 weeks
Explanation: It’s best to start a Search Ads 360 bid strategy with a CPA, ERS, or ROAS target that matches historical (last 3- 4 weeks) performance because large differences in target ROI compared to historical performance may have an unexpected effect on spend and conversions or revenue.
Read more here: https://support.google.com/searchads/answer/7085426