Which requirement relates to the availability of food at licensed premises?

In licensed premises, the requirement for food availability is crucial to promote responsible drinking and enhance the social atmosphere. Having food available at all times when alcohol is sold ensures that patrons have the option to consume food alongside their drinks, which can help mitigate the effects of alcohol consumption. This approach aligns with the goal of promoting public health and responsible behavior in environments where alcohol is served.

The other options do not align with the legal expectations placed on licensed premises. Serving food only between meals limits accessibility, which could lead to excessive drinking. Claiming food is optional undermines the responsibility that licensees have to ensure a safe environment for their patrons. Requiring food to be pre-ordered with alcohol would unnecessarily restrict patrons' choices and may deter guests from ordering food. Therefore, the correct choice emphasizes the importance of providing consistent access to food in relation to alcohol service.