I would debate on not testing on animals because not only would it possibly harm the animals but the results would also no be completely accurate. Rather it be actual volunteering humans.
The correct answer is plaintive ballad and mourning.
Elegiac broadside itself is a type of ballad which has a plaintive feel and which is mournful.
It is a poetry which tells the story of a life which is being lost. An elegiac broadside is being got from mournful feeling of a poetry.
If a story is being taught like a ballad, it is being recited for a person who has died.
The broadside is the paper which contains the announcements, the public information and the elegies.
A famous example of an elegiac broadside is the elegy.
Answer:
An armchair.
It has legs but can't walk.
I think there are many best selling ones. Maybe you can Google it.