Think on (one’s) feet

Do you know the English expression “to think on (one’s) feet“? Read the conversation below. Can you guess the meaning?

Edwin: Who is going to do the presentation at the conference?

Paul: Sue is going to do it. We think some people will ask difficult questions. Sue is good at thinking on her feet.

Does it mean:

a) think about (one’s) feet

b) think standing up

c) make fast decisions

d) make good decisions

The answer is below!↓

 

Answer: c) make fast decisions