A. Offhand
B. Unimportant
C. Unreal
D. Effective
✅ The correct answer is option A.
Offhand : without previous thought or consideration.
Offhand : without previous thought or consideration.
Unimportant : lacking in importance or significance.
Unreal : imaginary or illusory.
Effective : successful in producing a desired or intended result.
Impromptu : done without being planned or rehearsed.
Synonym of Impromptu is Offhand