What type of service is typically conducted at gravesides during immediate burial?

The type of service typically conducted at gravesides during immediate burial is a graveside service. This service is characterized by its focus on the location of the burial, where family and friends gather at the gravesite to pay their respects to the deceased. It often includes a brief ceremony led by a religious or community leader, recitations, personal reflections, and sometimes ritualistic elements that honor the life of the deceased.

In contrast, a memorial service usually takes place at a different location and may occur at a later date, allowing for more extensive tributes or guest participation. A formal ceremony, while it can occur at gravesides, typically implies a structured service with more extensive proceedings than what is customary at a graveside. A celebration of life, too, tends to be more upbeat and focuses on the individual's legacy rather than the specifics of the burial setting, often held in a separate venue to allow for a more celebratory atmosphere.

Therefore, the graveside service is uniquely defined by its immediate connection to the burial and the setting in which it is performed, making it the correct answer.