Question

When she heard that her son had been taken to hospital, she left work (at the drop of a hat). Give the correct definition of the (bracketed phrase) 1. Grabbed her hat 2. Instantly, quickly 3. Slowly but surely 4. In a taxi cab

Answer 1

At the drop of a hat means when someone does something that is very swift or fast without even thinking of the action.

The immediate gesture is often referred to by the phrase as at the drop of a hat.

Here it means the woman soon after hearing the news that her son has been taken to the hospital did not think twice regarding leaving her work.

Thus the phrase at the drop of a hat has been used here.