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 foremost criterion of selection we adopted were the number of years of training a dancer had received under a particular guru.
The foremost criterion of selection we adopted
were the number of years of training
a dancer had received
under a particular guru.
No error
Correct answer is B
was the number of years of training