Which flight allows customers to select their own beers?

The option that allows customers to select their own beers is the "Make Your Own 4 Pack." This choice stands out because it specifically emphasizes customization, enabling patrons to create a unique selection based on their personal preferences. In this format, customers have the freedom to choose from a variety of beers that may include different styles, flavors, and breweries, resulting in a personalized flight that caters to their individual taste.

In contrast, the other options typically consist of pre-selected beers. The House Beer Flight and the Belgium Beer Flight feature curated selections by the establishment, which means the choices are predetermined and do not permit customer customization. Similarly, the Brewer Collection Series Flight displays a specific collaboration or theme, making it represent a fixed assortment rather than allowing for personal selection. Thus, the "Make Your Own 4 Pack" is the only option that grants customers the flexibility to choose their beers, making it the correct answer.