In which of the following situations can minors loiter in places that sell alcohol?

Minors can loiter at a grocery store with a separate alcohol section because the law allows minors to be present in retail environments, such as grocery stores, as long as they do not enter specific areas where alcohol is sold if the establishment provides a separate section for alcohol. This separation ensures that minors are not exposed to an environment primarily focused on drinking, such as a bar, where the intention of the establishment is to serve alcohol primarily for consumption on-site.

The other situations present circumstances where minors would typically not be allowed to loiter. For instance, a bar with no separate dining area does not distinguish between patrons, making it inappropriate for minors to be present. Similarly, being in a bar after school hours or in any public establishment serving alcohol usually implies the availability of alcohol as a primary focus, which restricts minor access.