Question
Credentialed training of service technicians in the
newer technologies are welcome as they will bring about change of refrigerants used in the repair and replacement market and create additional employment. (Q.76-79): In each question below, a sentence is given with a part of it printed in bold type. That part may contain a grammatical error. Each sentence is followed by phrases 1), 2) and 3). Find out which phrase should replace the phrase given in bold to correct the error, if there is any, and to make the sentence grammatically meaningful and correct. If the sentence is correct as it is and ‘ No correction is required’ , mark  4) as the answer .Solution
Here ‘are’ should be replaced by ‘is’ as verb should be in agreement with the subject ‘credentialed training’ and ‘they’ will be replaced by ‘it’ as it refers to the training not the technicians
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