Read the sentence given below to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. The corresponding letter of that part is the answer. If the sentence is error-free then, choose “No Error” as the answer. (Ignore the errors of punctuation, if any.)

The actress plays the role of(A)/ a diligent spy who secretly gets (B)/information whereas carrying (C)/out her duties at the plant (D).

Correct option is C

The error lies in part (C). Here, ‘whereas’ should be replaced with ‘while’.
Whereas: in contrast or comparison with the fact that.
While: at the same time; meanwhile
Thus, the correct sentence will be “The actress plays the role of a diligent spy who secretly gets information while carrying out her duties at the plant.”