How can you effectively measure which content resonates with subscribers?

Use the Comments report and filter for comments from non-subscribers.
Use the Watch time report overlayed with the comparison metric “audience preference”.
Use the Subscribers report and select “Subscribers lost” for the last 30 days.
Use the Watch time report overlayed with the comparison metric “subscribers”.

The correct answer is:

Use the Watch time report overlayed with the comparison metric “subscribers”.