Directions: Select the most appropriate meaning of the following idiom.
Be on a high alert
- ALikely to face problems due to a wrong action
- BBe very much in demand for something
- CBe watchful and ready to take action
- DBe known widely for your actions
Solution & Step-by-step Explanation
The idiom 'be on high alert' means to be extremely vigilant, watchful, and prepared to deal with an imminent threat or situation immediately.