Answer: Lead generation
Explanation: In simple words, lead generation refers to the process under which an entity tries to make their potential customers interested in their product for the first time. It can also be seen as the initiating step in building the customer base.
In the given case, the Texas department is trying to attract tourists to visit their state. It is the first time they are trying to do so by inviting the readers of magazines.
Hence from the above we can conclude that the primary purpose of their ad was lead generation.