Read the sentence to find out whether there is any error in it or not. The error, if any, will be in one part of the sentence. The number of that part (which has the error) is the answer. If there is no error, the answer is (5). Ignore errors of punctuation, if any.
The invention of the horse collar (A)/ in the Middle Ages led to changes in (B)/ agricultural methods and was as (C)/ such a technological advance. (D)/ No error (E)
Correct option - 5
There is no grammatical error in the above given sentence. Hence, option 5 is the correct answer.