Direction: In the following questions, some parts of the sentences have errors and some are correct. Find out which part of a sentence has an error. If a sentence is free from errors, your answer is No error. 
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					 Solve the question according to given instruction
 
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-  Do you know
 - whom the
 - next speaker is?
 - No error
 
 -  Do you know
 
Correct Option: B
Who is used to show which person or people you mean/used in question. Whom is used as the Object of a Verb or Preposition. Hence, who the is the right usage.