From the options given below, choose the word that is nearest in meaning to the given underlined word.

Vigilant

Watchful

The correct answer is Option (3) → Watchful

"Vigilant" means being alert and watchful, especially to avoid danger or problems.

Option (1) → Smart: Refers to being clever or well-dressed, not necessarily alert or watchful.
Option (2) → Ambitious: Describes someone with a strong desire to succeed, not someone who is necessarily alert.
Option (4) → Intelligent: Refers to mental ability or knowledge, not alertness or watchfulness.