Along, narrative poem about a heroic figure is a fable. a myth. a legend. an epic.

An epic.

Explanation:

An epic poem is, indeed, a long narrative  poem that most often deals with the actions and events in the life of one or many more heroic figures in a time setting that usually precedes the written memory of a culture and that deals with divine interventions or superhuman agencies. An epic poem tends to be the defining matrix on which a culture founds its values. In the Western World, Homer´s epics, The Iliad and The Odyssey, are the most important examples of an epic poem.

answer: b (host)

viruses use the cells of living organisms to reproduce. the cell which is used by virus is called as "host cell". it is a living cell in which virus multiplies, example bacteria, plant or an animal cell.

in this, the virus is a parasite, which uses host cell for its benefit (reproduction) by using the cell machinary of host cell.