Final answer:
Network advertising allows for targeting concentrated markets, using viewer data to strategically direct advertisements to specific demographics who are most likely to be interested in the products or services being advertised.
Step-by-step explanation:
An advantage of network advertising is that it enables advertisers to target concentrated markets. Network and cable television companies collect sophisticated data on their viewerships that allow sponsors to deliver targeted advertising campaigns aimed at specific demographics. This strategy aligns perfectly with shows tailored to particular interests, whether it be cartoons for children on Nick Jr. or cooking shows on Telemundo, ensuring that advertisements reach the intended audience with interests closely aligned with the marketed products or services.