Select the most appropriate option that can substitute the underlined segment in the given sentence.
I have been waiting from two hours.
I have been waiting for two hours.
Where is Paratroopers Training school?
Who is the author of the book 'From Purdah to Parliament'?
Who published the book entitled "An illustrated guide to the Lepidoptera of India: taxonomic procedures, family characters, diversity and distribution"?
Who authored the novel "Five Point Someone: What not to do at IIT"?
Erza cup is associated with which sport?
The book ‘An Era of Darkness: The British Empire in India’ is written by which author?
Who is the author of the book "Dabbling in Diplomacy: Authorised & Otherwise, Recollections of a Non-Career Diplomat"?
Who is elected as the chairman of the Indian Farmers Fertiliser Cooperative (IFFCO)?
Who authored the book "Ghulam Giri," criticizing the caste system and advocating for social justice?
The book 'Target 3 Billion' is written by ______.
