What Is a Humanitarian Intervention

What is a humanitarian intervention?

A) When a third party joins a conflict to prevent its ally from losing.
B) When a third party attempts to relieve a crisis involving human rights abuses.
C) When a third party erects tariffs on imports to recoup losses from unfair trade practices.
D) When a third party drafts a resolution of condemnation in the United Nations.
E) When an established alliance allows a weaker state to join it.