Question

the word monitor has several meanings. which meaning is used in this sentence? casey was chosen to be the class monitor this week. a device that detects dangerous substances a person who warns or gives directions to others a device that displays video and is often attached to a computer

Explanation:

En "Casey was chosen to be the class monitor this week", "monitor" se refiere a una persona que advierte o da direcciones.

Answer:

a person who warns or gives directions to others