Overlapping audiences enables advertisers to learn more about audiences on Amazon.com and discover new audiences that share common insights with a selected audience.
Explanation:
The correct answer is **True** because overlapping audiences allow advertisers to gain deeper insights into their target demographics on Amazon.com by identifying and analyzing the shared characteristics and behaviors of different audience segments. This feature helps advertisers discover new potential audiences that have similar interests or purchasing patterns to their selected audience, facilitating more effective targeting strategies. By understanding these overlaps, advertisers can refine their campaigns and reach a broader yet relevant audience, ultimately enhancing their marketing effectiveness on the platform.