Select the most appropriate synonym of the given word.
Alert
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Vigilant.
Alert refers to watching, listening, etc. for something with all your attention. Vigilant is the correct synonym as it means being very careful to notice things, esp. signs of danger.
Other options mean:
Inactive means doing nothing i.e. not active.
Dull means not interesting or exciting.
Smart means able to think quickly or intelligently in difficult situations.