some of the sentence are grammatically correct and some are incorrect. Find which part of the sentence has an error and mark that part. If there is no error,mark that part as your answer
`("We can't hardly belive")/a` `("that the situation is so serious as to")/b` `("justify such precautions as you have taken")/c` `("No error")/d`

Explanation

(a) Remove .not.