- Add more phrase and exact match keywords to improve reach.
- Ignore suggestions to add relevant new keywords.
- Add Customer Match lists with data that is more than 90 days old.
- Eliminate negative keywords that could block relevant traffic.
The correct answer is: Eliminate negative keywords that could block relevant traffic.
Explanation: When a digital marketing manager upgrades keywords to broad match, they should eliminate negative keywords that could potentially block relevant traffic. Negative keywords can prevent ads from being triggered for certain searches. While they can be useful to reduce undesired traffic, they should be used with care as they may limit the reach of campaigns and exclude potential relevant searches that haven’t been previously considered.