Dadabhai Naoroji (4 September 1825 to 30 June 1917), known as the Grand Old Man of India, was a Parsi intellectual, educator, cotton trader, and an early Indian political and social leader.
In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option. The president's coterie of advisers was unable to offer him a ____________ to the national problem.