Final answer:
Due to the Black Death, labor became more valuable due to scarcity and survivors could capitalize on new economic opportunities created by the vast depopulation.
Step-by-step explanation:
The economic benefits for survivors of the Black Death in Florence are best represented by the second and third options. After the plague caused massive depopulation, the survivors found that there were fewer workers available, which meant their labor was in greater demand and could therefore command higher wages. Additionally, this vacuum created new economic opportunities as the social and economic landscape was radically altered, giving survivors the chance to take on roles and properties that were previously unavailable to them. The government did not necessarily provide financial support directly, but the restructuring of society itself offered indirect benefits to those who survived.