On edge

Do you know the English expression “to be on edge“? Read the conversation below. Can you guess the meaning?

Emily: What’s wrong with you today? You seem like you are on edge.

Christina: I am. I’m waiting for my test results. They are due to come today.

Does it mean:

a) be on the edge of something

b) be nervous or anxious

c) be terrified

d) be energetic

The answer is below!↓

 

Answer: b) be nervous or anxious