An essential feature of bullying is

A) its persistence.
B) its harshness.
C) its hostility.
D) its harmfulness.
E) its demeaning nature.

Persistence

The quality of continuing steadily despite problems or difficulties.

Hostility

A form of anger and aggressive behavior that can result from frustration, perceived injustice, or other negative feelings.

Demeaning Nature

Refers to the act or attitude of reducing the value or worth of something in a disrespectful manner.