Some of the sentences have errors and some are correct. Find out which part of a sentence has an error and corresponding to the appropriate letter (a,b,c). If a sentence is free from errors, corresponding to (d) in the correct sheet.
`("A senior doctor")/a` `("expressed concern")/b` `(" about physicians recommended the vaccine")/c` `("No error")/d`.

Explanation

(c) Replace .recommended. by .recommmending.