It’s time to reinvent the（）for how work is conducted， since we are still relying on a very 20th century notion of work， Hagel says.

It’s time to reinvent the（）for how work is conducted， since we are still relying on a very 20th century notion of work， Hagel says.
A、 form
B、 firm
C、 formula
D、 farm
正确答案： C.formula