What allocation method distributes resources according to those who arrive first?

The allocation method that distributes resources according to those who arrive first is known as "first come, first served." This method works on the principle that individuals or entities receive access to resources based on their order of arrival, thus prioritizing those who are present or who request the resources earlier than others. This approach is often used in various contexts, such as in service industries, ticket sales, or waiting lists, where there is a finite amount of resources available and demand exceeds supply.

The first come, first served method promotes fairness by ensuring that everyone has an equal opportunity based on their timing rather than other potentially arbitrary criteria. It is straightforward and easy to understand, which makes it a practical allocation method in many real-world situations.