A popular radio station is trying to get more users. They have created a contest for the social media fans to win tickets to see a popular music artists. The more the user shares the link, the more entries they have to the contest. This is called a .

Viral H-ook.

Explanation:

H-ook is referred to as something that enables to attract a person's attention and reels them in. Vir-al H-ook is a part of v-ir-al marketing. Just like its name it helps to catch the attention of people and reel them in.

It is a strategy through which v-ir-al marketing works by passing a message from one person to the other. This can be done by creating ads on social media platforms. These ads grab the attention of the viewer and compel him/her to view the product.

The strategy that the radio station has used to attract more users is called Vi-r-al h-ook. They have created a li-nk and asked the viewers or the users to share the li-nk and as users share this li-nk they obtain more users.

So, the correct answer is Vi-r-al H-ook.