"He had been splashing in the shallow end until the shrill sound of the lifeguard's whistle cut through the air like a siren."

In this sentence, the whistle most likely symbolizes
the answer is power
Why is this answer correct?

The correct answer is power because the sound of the lifeguard's whistle has the ability to command attention and compel action. In a pool or beach setting, the lifeguard's whistle is a symbol of authority and control. When it cuts through the air, it signifies that someone in a position of power is issuing a directive or warning. The use of the word "shrill" suggests a sharp, piercing sound, emphasizing the strength and commanding nature of the whistle's power.