What type of Custom Report shows a static sortable table with rows of data?

What report shows users who initiated sessions over 1-day, 7-day, 14-day, and 30-day periods?

Active Users report Cohort Analysis report Users Flow report User Explorer report Download Google Analytics Individual Certification Exam Answers (PDF)

What report shows the percent of site traffic that visited previously?

Referrals report Frequency & Recency report New vs Returning report Sales Performance report Download Google Analytics Individual Certification Exam Answers (PDF)

Which reports require the activation of Advertising Features?

Real-time reports Cohort Analysis reports Demographics and Interests reports Geo reports Download Google Analytics Individual Certification Exam Answers (PDF)