In the following questions, some of the sentences have errors and some are correct. Find out which part of a sentence has an error. The number of that part is the answer. If there is no error your answer is (4) i.e. No error.
The vaccine (1) / when hit the Indian market (2) /is dogged by controversy. (3)/No error. (4)

Answer

C

Explanation

Here simple past (passive) i.e. was dogged by controversy should be used .