Jason works for an advertiser called “Velda&Waag” who just set up a new Tag Manager in SAS and generated the tag code. What is the first step they should take in order to fully utilize benefits of Tag Manager, before sending the tag code to the webmaster for implementation?

Test Tag Manager
Define activity rules within Tag Manager and map one or more webpages to corresponding conversion and retargeting activities.
Determine campaign KPIs, requirements around conversion and third party tags as well as their retargeting strategy. Then, identify webpages which will be tracked and used for retargeting.
Publish Tag Manager