Read each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer. If there is no error, the answer is 'E'. (Ignore the errors of punctuation, if any).
The health workers are being tried their best to popularise preventive measures.
The health workers are
being tried their best
to popularise
preventive measures.
No error
Correct answer is B
trying their best