Parts of the following sentence have been given as options. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.

Educators must roll up their sleeves and do a more best job of teaching critical thinking.

A

Educators must roll up their sleeves

B

No error

C

and do a more best job

D

of teaching critical thinking