Do you know the English idiom “go the extra mile“?

Look at this conversation. Can you guess the meaning?

Zita: Harry made a great presentation, didn’t he? His PowerPoint slides were really impressive. They were better than mine!

Dillon: Yes, he always goes the extra mile when he makes a presentation.

Does it mean

a) be motivated in your work

b) make a bigger effort than is expected

c) travel a long distance

d) perform your job correctly

The answer is below! ↓

 

 

Answer: b) make a bigger effort than is expected