A. Watchful
B. Intelligent
C. Observant
D. Energetic
✅ The correct answer is option A.
Watchful : watching someone or something closely; alert and vigilant.
Watchful : watching someone or something closely; alert and vigilant.
Intelligent : having or showing intelligence, especially of a high level.
Observant : quick to notice or perceive things.
Energetic : showing or involving great activity or vitality.
Alert : the state of being watchful for possible danger.
Synonym of Alert is Watchful