Final answer:
The error is in part (b) of the sentence, which should use the simple present tense 'reach' instead of 'shall reach' after the conjunction 'as soon as'.
Step-by-step explanation:
The error in the sentence is in part (b), where it says 'I shall reach Mumbai'. The correct sentence structure in English requires the simple present tense after conjunctions like 'as soon as', especially when referring to future events. Therefore, the sentence should be: 'As soon as I reach Mumbai, I shall send you the file you have asked for.'
In this type of error spotting a sentence is divided into four parts in the question itself, you have to find out which part contains an error. Q) In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and click the option corresponding to it.