Which of the following cocktail-building procedures is most likely to be used to make a Rum and Coke?

The procedure most commonly used to create a Rum and Coke is the Pour or Building Procedure. This method involves pouring the ingredients directly into a glass, typically over ice, rather than mixing them in a shaker or blender. The Rum and Coke is a highball drink, which is characterized by its straightforward assembly, allowing the distinct flavors of the rum and cola to mix naturally as they're poured together in the same glass.

In this case, the building procedure is ideal because it's quick, efficient, and showcases the simplicity of the cocktail. Additionally, it allows for easy adjustments in terms of the ratio of rum to cola based on personal preference. The focus is on simplicity and ease of enjoyment, rather than complex mixing or blending techniques, which would not serve to enhance this particular drink. Therefore, the Pour or Building Procedure is the most suitable choice for preparing a Rum and Coke.