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 your answer. If a sentence is free from errors, then your answer is (4) i.e. No error.
A senior doctor (1) / expressed a concern (2) / about physicians recommended the vaccine. (3)/ No error. (4)

Answer

C

Explanation

Here, about physician.s recommended vaccine should be used. It is improper to use article the. here.
Look at the sentences :
The cow gives us milk.
My cow gives milk.