Antonym of DORMANT

Answer: Option A

Dormant : (of a volcano) temporarily inactive.
Active : (of a volcano) that is erupting or has erupted in historical times.
Modern : relating to the present or recent times as opposed to the remote past.
Permanent : lasting or intended to last or remain unchanged indefinitely.
Transient : lasting only for a short time; impermanent.

Antonym of Dormant is Active