Final answer:
The correct answer is laments, as they are expressions of grief suitable for a service honoring miners trapped in a collapse.
Step-by-step explanation:
The service in honor of the miners trapped in the underground collapse included prayers and laments. A lament is an expression of grief or sorrow, which would be appropriate in a service for individuals in a tragic situation. Choices like eulogies are also associated with mourning but are specific to a funeral or memorial service, typically involving a speech that praises someone who has recently passed away. Protests are acts of objection or disapproval, often in a public setting, which would be unlikely in a solemn service. Sermons, on the other hand, are often part of religious services that involve a moral or religious lesson but may not directly address mourning or commemorating the specific individuals involved in the tragedy.