Answer:
B. Urgent.
Step-by-step explanation:
The passage tells the scene when the volcano at Mount Vesuvius erupted, leading to the residents frantically gathering their family members and looking for safer places. So, when reading this passage, we can be sure of the rush the people will be in. There is no way this tone can be an angry one, nor can it be silly or uncaring. If one were to read it as a silly or uncaring passage, then it is obvious that that person has no humanity in him/her. the only possible tone the narrative can be read with is an urgent one.