Which metric reports on how often a channel contributes to a conversion prior to last-click attribution?

What data does Google Analytics prohibit collecting?

Billing city Personally identifable information Purchase amount Product SKU(s) Download Google Analytics Individual Certification Exam Answers (PDF)

What would prevent data from appearing in a Custom Report?

Too many metrics in a Custom Report A filter that removes all the data Too many dimensions in a Custom Report Custom Report isn’t shared with users in the same view Download Google Analytics Individual Certification Exam Answers (PDF)

What feature is required to collect the number of comments users posted to a web page?

Custom Metric Custom Channel Groupings Custom Dimension Calculated Metric Download Google Analytics Individual Certification Exam Answers (PDF)