Which of the phrases A, B, C and D given below should replace the phrase given in bold in the following sentences to make the sentence grammatically correct? If the sentence is correct as it is and there is no correction required mark e: i.e. ‘No correction required’ as the answer.
It is difficult to work with him because he is one of those persons who think he is always right.
Foreign businesses in developing countries have usually problems with lack of infrastructure and rigid laws.
Pick out the most effective word from the given words to fill in the blank in each sentence to make the sentence meaningfully complete.
