You have a goal configured for newsletter signups. You want to determine which traffic sources are sending you the most users who’ve signed up for your newsletter. In this All Traffic report, which setting should you adjust to find this data?

The correct answer is B because selecting the "Goal Set" dropdown allows you to choose a specific goal (like newsletter signups) and view the associated conversion data for each traffic source. This directly answers the question of determining which sources contribute most to that goal. Option A, "Secondary dimension," adds another layer of data but doesn't filter by goal completion. Option C, "Plot Rows," visualizes data trends but doesn't filter by goal. Option D, "Table Display," changes how the data is presented (e.g., percentage, performance) but doesn't select the goal itself.