Correct Answer:
Option D - In the given sentence word 'best' is a superlative degree of 'good'. It contains 'the' before it. So, the correct sentence– I am not in the best position to advise you in this matter.
D. In the given sentence word 'best' is a superlative degree of 'good'. It contains 'the' before it. So, the correct sentence– I am not in the best position to advise you in this matter.